I made an observation, maybe it can help to solve the problem.
To shortly recall the problem: after a while of using LMMS it stopped to load VSTs. Always the same error message that the VST could not be loaded for some reason.
Now I found 2 VSTs which load without any problem: 4Front Piano x64 and 4Front bass x64.
Interestingly however, the 4Front Piano (without x64) does not work!
----> ???
To shortly recall the problem: after a while of using LMMS it stopped to load VSTs. Always the same error message that the VST could not be loaded for some reason.
Now I found 2 VSTs which load without any problem: 4Front Piano x64 and 4Front bass x64.
Interestingly however, the 4Front Piano (without x64) does not work!
----> ???