Find usages not working (Alt+F7)!

Hello there.

I have been using IntelliJ for 4 year.

I have 10.5.2 U.

My problem for some reason find usages and ispections have stopped working.

My classes get highlighted for deletion and when I try to find usages of variables that are used many times at the same class it finds nothing.

Things I tried:

1. Recreate the project/modules

2. Reset ide settings to default

3. Use EAP 110.187

4. Removed some external plugins

What is strange though is if I use the text search (crtl+shift+F) it finds all of them in all the classes.

Any hints?