Installing Irida (EAP) breaks 4.5.3?

Hi.

I just tried Irida.
The plugins I use weren't working, so I went back to 4.5.3...
But now, it's broken!
The Edit, Search, View, Go To, Code, Analyse and Refactor menus are empty!
And also I noticed ctrl+w (select word at carret) doens't work anymore
either.

It's quite unusable...

I tried to reinstall it at the same place, and to reinstall it to
another place, to no avail.

I would try to delete my config and system folders, but I do not wish to
loose all my preferences!

Please help me fix it!

BoD