The new launcher (0.8.1) doesn't seem to be building complete versions on disc. The only thing it does is generate the JAR file (not the natives or the JSON), causing the launcher to believe it isn't installed yet, when it is. A launcher log and debug crash report for my setup can be found at https://gist.github.com/anonymous/599573df369f01ad506e.
Linked issues
is duplicated by 5
MCL-323
Launcher does not remember that 13w21a was Downloaded
Resolved
MCL-321
Snapshot 13w21a does not change it's status after installing.
Resolved
MCL-331
Launcher constantly saying "Will be installed" with Snapshot 13w21a
Resolved
MCL-336
Deleting Jar
Resolved
MCL-342
Version Selection: Will be installed
Resolved
Comments 6
hey.
it doesn't include the natives in the same folder as the .jar anymore for some time now. it unzips it at runtime depending on the versions specified in the json from a common file in the libraries folder.
but yes, curiously the json is missing.
alternatively, you can get it here: http://pastie.org/private/lqhcnutf8drc8qb96ssx7g
just save this in ~/.minecraft/versions/13w21a/13w21a.json and it will stop complaining about redownloading
I noticed this today when the new snapshot came out. it kept saying. 13w21a will be installed even though it was allready installed.
Confimed!