ComanderMarc 's data does want to convert.
https://sessionserver.mojang.com/session/minecraft/profile/03f052deb0bb45c4b20f51b507eac436
Crash Log
[19:56:12] [Server thread/WARN]: Could not lookup user uuid for ComanderMarc
com.mojang.authlib.exceptions.AuthenticationUnavailableException: Cannot contact authentication server
at com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:69) ~[minecraft_server.1.7.8.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilGameProfileRepository.findProfilesByNames(YggdrasilGameProfileRepository.java:45) [minecraft_server.1.7.8.jar:?]
at ny.a(SourceFile:58) [minecraft_server.1.7.8.jar:?]
at ny.a(SourceFile:349) [minecraft_server.1.7.8.jar:?]
at ls.aE(SourceFile:472) [minecraft_server.1.7.8.jar:?]
at ls.e(SourceFile:153) [minecraft_server.1.7.8.jar:?]
at net.minecraft.server.MinecraftServer.run(SourceFile:339) [minecraft_server.1.7.8.jar:?]
at li.run(SourceFile:628) [minecraft_server.1.7.8.jar:?]
Caused by: java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method) ~[?:1.7.0_09]
at java.net.SocketInputStream.read(Unknown Source) ~[?:1.7.0_09]
at java.net.SocketInputStream.read(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.InputRecord.readFully(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.InputRecord.read(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.SSLSocketImpl.readDataRecord(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.AppInputStream.read(Unknown Source) ~[?:1.7.0_09]
at java.io.BufferedInputStream.fill(Unknown Source) ~[?:1.7.0_09]
at java.io.BufferedInputStream.read1(Unknown Source) ~[?:1.7.0_09]
at java.io.BufferedInputStream.read(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.http.HttpClient.parseHTTP(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source) ~[?:1.7.0_09]
at com.mojang.authlib.HttpAuthenticationService.performPostRequest(HttpAuthenticationService.java:83) ~[minecraft_server.1.7.8.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:52) ~[minecraft_server.1.7.8.jar:?]
... 7 more
[19:56:12] [Server thread/ERROR]: Conversion failed, please try again later
og: Could not request user ComanderMarc from backend systems
at oe.onProfileLookupFailed(SourceFile:322) ~[minecraft_server.1.7.8.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilGameProfileRepository.findProfilesByNames(YggdrasilGameProfileRepository.java:90) ~[minecraft_server.1.7.8.jar:?]
at ny.a(SourceFile:58) ~[minecraft_server.1.7.8.jar:?]
at ny.a(SourceFile:349) [minecraft_server.1.7.8.jar:?]
at ls.aE(SourceFile:472) [minecraft_server.1.7.8.jar:?]
at ls.e(SourceFile:153) [minecraft_server.1.7.8.jar:?]
at net.minecraft.server.MinecraftServer.run(SourceFile:339) [minecraft_server.1.7.8.jar:?]
at li.run(SourceFile:628) [minecraft_server.1.7.8.jar:?]
Caused by: com.mojang.authlib.exceptions.AuthenticationUnavailableException: Cannot contact authentication server
at com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:69) ~[minecraft_server.1.7.8.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilGameProfileRepository.findProfilesByNames(YggdrasilGameProfileRepository.java:45) ~[minecraft_server.1.7.8.jar:?]
... 6 more
Caused by: java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method) ~[?:1.7.0_09]
at java.net.SocketInputStream.read(Unknown Source) ~[?:1.7.0_09]
at java.net.SocketInputStream.read(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.InputRecord.readFully(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.InputRecord.read(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.SSLSocketImpl.readDataRecord(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.AppInputStream.read(Unknown Source) ~[?:1.7.0_09]
at java.io.BufferedInputStream.fill(Unknown Source) ~[?:1.7.0_09]
at java.io.BufferedInputStream.read1(Unknown Source) ~[?:1.7.0_09]
at java.io.BufferedInputStream.read(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.http.HttpClient.parseHTTP(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source) ~[?:1.7.0_09]
at com.mojang.authlib.HttpAuthenticationService.performPostRequest(HttpAuthenticationService.java:83) ~[minecraft_server.1.7.8.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:52) ~[minecraft_server.1.7.8.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilGameProfileRepository.findProfilesByNames(YggdrasilGameProfileRepository.java:45) ~[minecraft_server.1.7.8.jar:?]
... 6 more
[19:56:12] [Server thread/WARN]: Encountered a problem while converting the player save files, retrying in a few seconds
[19:57:16] [Server thread/WARN]: Could not lookup user uuid for ComanderMarc
com.mojang.authlib.exceptions.AuthenticationUnavailableException: Cannot contact authentication server
at com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:69) ~[minecraft_server.1.7.8.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilGameProfileRepository.findProfilesByNames(YggdrasilGameProfileRepository.java:45) [minecraft_server.1.7.8.jar:?]
at ny.a(SourceFile:58) [minecraft_server.1.7.8.jar:?]
at ny.a(SourceFile:349) [minecraft_server.1.7.8.jar:?]
at ls.aE(SourceFile:472) [minecraft_server.1.7.8.jar:?]
at ls.e(SourceFile:153) [minecraft_server.1.7.8.jar:?]
at net.minecraft.server.MinecraftServer.run(SourceFile:339) [minecraft_server.1.7.8.jar:?]
at li.run(SourceFile:628) [minecraft_server.1.7.8.jar:?]
Caused by: java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method) ~[?:1.7.0_09]
at java.net.SocketInputStream.read(Unknown Source) ~[?:1.7.0_09]
at java.net.SocketInputStream.read(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.InputRecord.readFully(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.InputRecord.read(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.SSLSocketImpl.readDataRecord(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.AppInputStream.read(Unknown Source) ~[?:1.7.0_09]
at java.io.BufferedInputStream.fill(Unknown Source) ~[?:1.7.0_09]
at java.io.BufferedInputStream.read1(Unknown Source) ~[?:1.7.0_09]
at java.io.BufferedInputStream.read(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.http.HttpClient.parseHTTP(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source) ~[?:1.7.0_09]
at com.mojang.authlib.HttpAuthenticationService.performPostRequest(HttpAuthenticationService.java:83) ~[minecraft_server.1.7.8.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:52) ~[minecraft_server.1.7.8.jar:?]
... 7 more
[19:57:16] [Server thread/ERROR]: Conversion failed, please try again later
og: Could not request user ComanderMarc from backend systems
at oe.onProfileLookupFailed(SourceFile:322) ~[minecraft_server.1.7.8.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilGameProfileRepository.findProfilesByNames(YggdrasilGameProfileRepository.java:90) ~[minecraft_server.1.7.8.jar:?]
at ny.a(SourceFile:58) ~[minecraft_server.1.7.8.jar:?]
at ny.a(SourceFile:349) [minecraft_server.1.7.8.jar:?]
at ls.aE(SourceFile:472) [minecraft_server.1.7.8.jar:?]
at ls.e(SourceFile:153) [minecraft_server.1.7.8.jar:?]
at net.minecraft.server.MinecraftServer.run(SourceFile:339) [minecraft_server.1.7.8.jar:?]
at li.run(SourceFile:628) [minecraft_server.1.7.8.jar:?]
Caused by: com.mojang.authlib.exceptions.AuthenticationUnavailableException: Cannot contact authentication server
at com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:69) ~[minecraft_server.1.7.8.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilGameProfileRepository.findProfilesByNames(YggdrasilGameProfileRepository.java:45) ~[minecraft_server.1.7.8.jar:?]
... 6 more
Caused by: java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method) ~[?:1.7.0_09]
at java.net.SocketInputStream.read(Unknown Source) ~[?:1.7.0_09]
at java.net.SocketInputStream.read(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.InputRecord.readFully(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.InputRecord.read(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.SSLSocketImpl.readDataRecord(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.AppInputStream.read(Unknown Source) ~[?:1.7.0_09]
at java.io.BufferedInputStream.fill(Unknown Source) ~[?:1.7.0_09]
at java.io.BufferedInputStream.read1(Unknown Source) ~[?:1.7.0_09]
at java.io.BufferedInputStream.read(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.http.HttpClient.parseHTTP(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source) ~[?:1.7.0_09]
at com.mojang.authlib.HttpAuthenticationService.performPostRequest(HttpAuthenticationService.java:83) ~[minecraft_server.1.7.8.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:52) ~[minecraft_server.1.7.8.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilGameProfileRepository.findProfilesByNames(YggdrasilGameProfileRepository.java:45) ~[minecraft_server.1.7.8.jar:?]
... 6 more
[19:57:16] [Server thread/WARN]: Encountered a problem while converting the player save files, retrying in a few seconds
[19:58:21] [Server thread/WARN]: Could not lookup user uuid for ComanderMarc
com.mojang.authlib.exceptions.AuthenticationUnavailableException: Cannot contact authentication server
at com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:69) ~[minecraft_server.1.7.8.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilGameProfileRepository.findProfilesByNames(YggdrasilGameProfileRepository.java:45) [minecraft_server.1.7.8.jar:?]
at ny.a(SourceFile:58) [minecraft_server.1.7.8.jar:?]
at ny.a(SourceFile:349) [minecraft_server.1.7.8.jar:?]
at ls.aE(SourceFile:472) [minecraft_server.1.7.8.jar:?]
at ls.e(SourceFile:153) [minecraft_server.1.7.8.jar:?]
at net.minecraft.server.MinecraftServer.run(SourceFile:339) [minecraft_server.1.7.8.jar:?]
at li.run(SourceFile:628) [minecraft_server.1.7.8.jar:?]
Caused by: java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method) ~[?:1.7.0_09]
at java.net.SocketInputStream.read(Unknown Source) ~[?:1.7.0_09]
at java.net.SocketInputStream.read(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.InputRecord.readFully(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.InputRecord.read(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.SSLSocketImpl.readDataRecord(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.AppInputStream.read(Unknown Source) ~[?:1.7.0_09]
at java.io.BufferedInputStream.fill(Unknown Source) ~[?:1.7.0_09]
at java.io.BufferedInputStream.read1(Unknown Source) ~[?:1.7.0_09]
at java.io.BufferedInputStream.read(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.http.HttpClient.parseHTTP(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source) ~[?:1.7.0_09]
at com.mojang.authlib.HttpAuthenticationService.performPostRequest(HttpAuthenticationService.java:83) ~[minecraft_server.1.7.8.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:52) ~[minecraft_server.1.7.8.jar:?]
... 7 more
[19:58:21] [Server thread/ERROR]: Conversion failed, please try again later
og: Could not request user ComanderMarc from backend systems
at oe.onProfileLookupFailed(SourceFile:322) ~[minecraft_server.1.7.8.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilGameProfileRepository.findProfilesByNames(YggdrasilGameProfileRepository.java:90) ~[minecraft_server.1.7.8.jar:?]
at ny.a(SourceFile:58) ~[minecraft_server.1.7.8.jar:?]
at ny.a(SourceFile:349) [minecraft_server.1.7.8.jar:?]
at ls.aE(SourceFile:472) [minecraft_server.1.7.8.jar:?]
at ls.e(SourceFile:153) [minecraft_server.1.7.8.jar:?]
at net.minecraft.server.MinecraftServer.run(SourceFile:339) [minecraft_server.1.7.8.jar:?]
at li.run(SourceFile:628) [minecraft_server.1.7.8.jar:?]
Caused by: com.mojang.authlib.exceptions.AuthenticationUnavailableException: Cannot contact authentication server
at com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:69) ~[minecraft_server.1.7.8.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilGameProfileRepository.findProfilesByNames(YggdrasilGameProfileRepository.java:45) ~[minecraft_server.1.7.8.jar:?]
... 6 more
Caused by: java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method) ~[?:1.7.0_09]
at java.net.SocketInputStream.read(Unknown Source) ~[?:1.7.0_09]
at java.net.SocketInputStream.read(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.InputRecord.readFully(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.InputRecord.read(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.SSLSocketImpl.readDataRecord(Unknown Source) ~[?:1.7.0_09]
at sun.security.ssl.AppInputStream.read(Unknown Source) ~[?:1.7.0_09]
at java.io.BufferedInputStream.fill(Unknown Source) ~[?:1.7.0_09]
at java.io.BufferedInputStream.read1(Unknown Source) ~[?:1.7.0_09]
at java.io.BufferedInputStream.read(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.http.HttpClient.parseHTTP(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) ~[?:1.7.0_09]
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source) ~[?:1.7.0_09]
at com.mojang.authlib.HttpAuthenticationService.performPostRequest(HttpAuthenticationService.java:83) ~[minecraft_server.1.7.8.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:52) ~[minecraft_server.1.7.8.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilGameProfileRepository.findProfilesByNames(YggdrasilGameProfileRepository.java:45) ~[minecraft_server.1.7.8.jar:?]
... 6 more
[19:58:21] [Server thread/WARN]: **** DETECTED OLD PLAYER FILES IN THE WORLD SAVE
[19:58:21] [Server thread/WARN]: **** THIS USUALLY HAPPENS WHEN THE AUTOMATIC CONVERSION FAILED IN SOME WAY
[19:58:21] [Server thread/WARN]: ** please restart the server and if the problem persists, remove the directory 'world\players'
[19:58:21] [Server thread/INFO]: Stopping server
Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases. If this has been done, we can reopen the issue.
Keep in mind that the "Resolved"-Status on this ticket just means "Answered", and that we are waiting for further information on whether this issue still exists or not. We will reopen it as soon as the requested information has been delivered.