When I'm trying to start game from eclipse in console I have this:

[20:53:18] [main/INFO] [GradleStart]: No arguments specified, assuming client.
[20:53:18] [main/INFO] [GradleStart]: Extra: []
Exception in thread "main" java.lang.RuntimeException: java.io.FileNotFoundException: C:\Users\Hitagi\.gradle\caches\minecraft\assets\indexes\{ASSET_INDEX}.json (Nie można odnaleźć określonego pliku)
at com.google.common.base.Throwables.propagate(Throwables.java:160)
at GradleStart.setupAssets(GradleStart.java:260)
at GradleStart.startClient(GradleStart.java:82)
at GradleStart.main(GradleStart.java:56)
Caused by: java.io.FileNotFoundException: C:\Users\Hitagi\.gradle\caches\minecraft\assets\indexes\{ASSET_INDEX}.json (Nie można odnaleźć określonego pliku)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(Unknown Source)
at java.io.FileReader.<init>(Unknown Source)
at GradleStart.loadAssetsIndex(GradleStart.java:266)
at GradleStart.setupAssets(GradleStart.java:204)
... 2 more

 

Any ideas what went wrong? I can add that this is clear installation of forge 10.13.0.1180...

I had a same problem with you! and finally solved it.

I guess you tried to update your forge.

 

http://www.minecraftforge.net/forum/index.php?topic=14048.0

this will be helpful for you.

 

and I suggest you to do "gradlew.bat clean"

and then try "gradlew.bat setupDecompWorkspace and gradlew.bat eclipse"

 

if you try to update, you should clean up the gradle first!