Odd Item Names

It seems that every item in my mod has an odd name to it when in the world. It happens with tabs, blocks, weapons, everything. Note that this mod was not imported, it was made using MCreator 1.7.6.

Items go like this: item.<item name here>.name

Tabs go like this: itemGroup.tab<tab name here>

Can anyone tell me what's going on here, and how to fix it?