Board Thread:Bug Reports/@comment-77.78.57.4-20151223140921/@comment-27190591-20151223162445

Try to use an up to date forge version (it seems you use 1.7.10-Forge10.13.2.1230). It this doesn't help, try to resetup you minecraft installation (Backup the previous one!) by deleting the .minecraft (and all other) folders. Backup your world.