The heck?

[KexMex]

Whenever I try to start my mod to test it, I can't select a .qdp file for some damn reason. Anyone know why?

[DiscipleOfAdun]

There are 2 possible reasons:

1. The Plugin is not supported for the version that you have. The plugin that would probably do this is Memgraft for 1.10.
2. The Plugins is messed up and not created correcly. I don't know how you'd have found a plugin that does this, it only happens when I tried to make one.