Rewire Problem

Im trying to run Renoise rewired to Reaper. I noticed that altough I’ve upgraded Renoise to 2.5, Reaper still starts Renoise 2.1 (Reaper has a menu where you can choose which program to start as rewire slave). I uninstalled Renoise 2.1 and now I cant even start Renoise as rewire slave. I tried asking on the Reaper forum, but I thought I ask here too.

Since programs with rewire slave capabilites somehow seem to report themselves to hosts, is this broken somehow with Renoise 2.5? How can I “register” Renoise 2.5 as possible slave?

I have already tried reinstalling both programs.

Reinstalling and rebooting (which I forgot before) solved the problem.