Got it now!
the 64studio comes with somehow old but very stable software. It had, as you were guessing, some old version of wxtoolkit installed.
I removed it all with the package-manager, around 10 packages, and rebuild and installed the newsest wxgtk.
Now everything flies!
Sooperduber jesse - thanks!
Thumbs up for your project.
Like in Mobiuse, i think you should have multible loop layers in each loop in sooperlooper.
Like an exstra dimension to the current model.
Tools to make and execute "songs". You know, going a,b,chorus on all the loops...