Minecraft Forums

I recently updated my Java to the latest build. I play on different versions of minecraft depending on what mods I want to play with. My unmodded version plays fine with no issues. However, when I want to play on 1.7.2 of .10, the launcher may say "download twitch-platform-5.16-natives-windows-64.jar" or "downloading lzma0.0_1.jar" or something like that and then doesn't do anything. The play button pops out again as if I never tried to launch. Does this have to do with me updating the java?

According the launcher log, Minecraft couldn't download the files relating to forge. does this mean that I have to re-download forge?

[16:52:17 WARN]: Couldn't download http://files.minecraftforge.net/maven/com/typesafe/akka/akka-actor_2.11/2.3.3/akka-actor_2.11-2.3.3.jar for job 'Version & Libraries'
java.lang.RuntimeException: Server responded with 404
at com.mojang.launcher.updater.download.ChecksummedDownloadable.download(ChecksummedDownloadable.java:97) ~[launcher.jar:?]
at com.mojang.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:109) [launcher.jar:?]
at com.mojang.launcher.updater.download.DownloadJob.access$000(DownloadJob.java:12) [launcher.jar:?]
at com.mojang.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:86) [launcher.jar:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.7.0_67]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.7.0_67]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.7.0_67]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.7.0_67]
at java.lang.Thread.run(Unknown Source) [?:1.7.0_67]

[16:52:17 WARN]: Couldn't download http://files.minecraftforge.net/maven/net/minecraftforge/forge/1.7.10-10.13.0.1208/forge-1.7.10-10.13.0.1208.jar for job 'Version & Libraries'
java.lang.RuntimeException: Server responded with 404
at com.mojang.launcher.updater.download.ChecksummedDownloadable.download(ChecksummedDownloadable.java:97) ~[launcher.jar:?]
at com.mojang.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:109) [launcher.jar:?]
at com.mojang.launcher.updater.download.DownloadJob.access$000(DownloadJob.java:12) [launcher.jar:?]
at com.mojang.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:86) [launcher.jar:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.7.0_67]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.7.0_67]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.7.0_67]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.7.0_67]
at java.lang.Thread.run(Unknown Source) [?:1.7.0_67]

[16:52:17 WARN]: Couldn't download http://files.minecraftforge.net/maven/com/typesafe/config/1.2.1/config-1.2.1.jar for job 'Version & Libraries'
java.lang.RuntimeException: Server responded with 404
at com.mojang.launcher.updater.download.ChecksummedDownloadable.download(ChecksummedDownloadable.java:97) ~[launcher.jar:?]
at com.mojang.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:109) [launcher.jar:?]
at com.mojang.launcher.updater.download.DownloadJob.access$000(DownloadJob.java:12) [launcher.jar:?]
at com.mojang.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:86) [launcher.jar:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.7.0_67]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.7.0_67]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.7.0_67]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.7.0_67]
at java.lang.Thread.run(Unknown Source) [?:1.7.0_67]

On top of that, these were repeated multiple times.

Turns out that I did need to download forge again. Thanks for the help, I never thought to look at the Launcher's Log