Crash on start of modpacks

[SharkROAR]

Hello everyone,

 

while trying to update the Forge versions of my two modpacks, the following errors occured after I was done with the update and tried starting the packs

 

[02:34:02] [main/ERROR]: There is a binary discrepency between the expected input class ahu (ahu) and the actual class. Checksum on disk is d13c64ad, in patch 746fe971. Things are probably about to go very wrong. Did you put something into the jar file?

[02:34:02] [main/ERROR]: The game is going to exit, because this is a critical error, and it is very improbable that the modded game will work, please obtain clean jar files.

 

 

Notes:

 

The minecraft version of the modpacks is set to 1.7.10

The Forge version I downloaded is the latest recommended 1.7.10 version (10.13.2.1291)

I did not change the .jar files in any way

Everything worked before I updated forge, problem is, if I change back to the earlier version, it's still not working..

 

Thanks in advance,

Shark

Edited February 17, 2015 by SharkROAR

[SharkROAR]

Fixed the issue by removing the modpack folder, forcing a version change and reinstalling it.

[Noblenik]

I need help with the Mianite season 2 modpack, i use a macbook air and i have the same problem i just dont understand how to fix this please help BTW it only appears on the Dock for about a second