1.7.10 is very very old, and no longer supported on these forums.
You will need to update to a more recent version (pref the latest) to receive support.
This thread will likely be locked once it is seen by a moderator.
In my case 'preview_OptiFine_1.12.2_HD_U_C8_pre' prior to 12-18-2017 was causing chests not to open. I DL'd the 12-18-2017 version that is compatible with forge 2577 and the chests open as before.