Serious problems with Tonelib 4.5.3 plugin and Reaper 6.18. When using Tonelib, next time opening same project - several items are moved. It's very confusing when both audio and midi items (parts) are misplaced and not on beat. Sometimes even items are missing completely. EDIT: One more problem: when Tonelib GFX is used (active) - sliders in Reapers own JS plugins stop to work properly. Goes away when Tonelib isn't active. I'm pretty sure it's Tonelib because I've uninstalled SWS. And I've gone back to a backup of the same project without Tonelib, added Tonelib to a couple of tracks, recorded new audio and the same happens again. Items get moved after saving and then reopening the project. This is a project with maybe 8 tracks in total, 1 min 30 s. long. Very few xruns and little CPU usage. Tonelib does not display any unusual CPU usage either. After removing Tonelib and moving the items to correct beats and record some more guitar with other guitar plugins - the problem does not occur again. It hasn't occured before on any project I've recorded with much heavier usage (more tracks, more plugins) I have posted this at the Reaper forum as well. Seems to me that Tonelib GFX is one of the very best Linux native guitar plugins. And the sounds from it was immediately sounding great - very elaborated presets and possibilities galore. Very sad I can't use it on my rig. If more information is needed I will be happy to provide it. Trying new source code, or whatever is needed. As I said, this GFX plugin seems to be THE guitar plugin for Linux!