Sorry, that was one of the many rabbit holes I went down figuring out what to do. Probably on the Discord platform.
Are you saying that nightly does not work with WINE 9?

I read that the nightly app image works with WINE 9, but that doesn't seem to be the case in my environment. lmms-1.3.0-alpha.1.659+g12632e6b5-linux-x86_64.AppImage Carla does not appear to be installed. That's OK, please ignore any related library errors. Jack appears to be installed on this system...

No, I did not, not using any of these, and typically try to keep non-standard repo software to a minimum as it tends to mess with updates. Could you explain what insights were to be gained from running vst in other software? The instruments worked fine in previous lmms versions. Let's say they I got...

Thanks! As per original post: I did start lmms from the console - no output there. I did not use lmms from the repos, but rather from KXStudio, which is what lmms hq recommends to get vst working. What I am trying to figure here is whether the KXStudio compilation is faulty - in which case compiling...

Ubuntu 15.04. Enabled KXStudio ppa and repos; installed lmms, wine and lmms-vst-full, which got me the Vestige option in instruments back. But loading any of the plug-ins (which worked in previous versions and are on the tested vst list) only gets me to a "please wait" pop-up. From then on...