I've seemed to have narrowed it down the file with the FXG Icon in it. It seems that when I disclude the file from the project it renders correctly. If used I get the weird compile errors. I'm not sure why this specific file is causing this. I'm concluding it may be a corrupted in some way and I will have to rebuild it from scratch to narrow down the issues.
Removing the FXG from the file itself doesn't help.