Hi Remco,

I tried to extract parts of the respective code pieces but was not able to reproduce the issue on the extracted code, i.e. NCrunch works like a charm on the simplified version.

I can say so much that it is about a pretty intricate code-part which heavily involves Prism, Mef-containers, timers, resources, DelegateCommands, etc. (net48).
Personally, i would suggest to refactor and put this issue aside instead.

Thanks, Marcel.