The filename for enderium heavy plating is 'EnderiumPlating.png', when it should be 'enderiumplating.png'. This results in a missing texture on case-sensitive (read: non-Windows) systems.

Relevant error message:

[Client thread/ERROR] [FML.TEXTURE_ERRORS]:     The missing resources for domain contenttweaker are:  
[Client thread/ERROR] [FML.TEXTURE_ERRORS]:       textures/items/enderiumplating.png

Already fixed by the current version.

Specifically, fixed here: cf56665