I can't found crash report.
I've tried "sudo updatedb" then "locate i crash-reports", but no results... :(
I will upload screen-shots of this issue asap.
I found one solution by overriding key assignment in "Controls" panel.
I use "NONE" for "Pause/Unpause Stream" and "NONE" for "Start/Stop Stream" (by pressing 'Escape'). Then, I can enter command with some '@' in a command block without issue. 😉
ubuntu 13.10
java version "1.8.0_05"
Java(TM) SE Runtime Environment (build 1.8.0_05-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.5-b02, mixed mode)
Minecraft 1.7.9
I have made some tests with streaming controls keys and testing typing in a command-block :
Pause/Unpause Stream = NONE and Start/Stop Stream = NONE => No problem.
Pause/Unpause Stream = F7 (the default key) and Start/Stop Stream = NONE => No problem.
Pause/Unpause Stream = NONE and Start/Stop Stream = F6 (the default key) => Error message about 'Twitch Broadcasting Unavailable'.
The key F6 is guilty 😉
But why F6 = @ ??? (I have never hit the key F6 in my command-block)