PlayMaker used to work fine until Unity crashed. From then on, I haven't been able to pop up the PlayMaker FSM editor window on the machine where the crash occurred (all other PM windows can be displayed, other plugins still work fine, in fact, everything works fine when I load the project on my other PC).
Symptoms : I get an empty window upon startup (which I assume to be the FSM editor window) saying "EditorWindow could not be loaded because the script is not found in the project". Trying to edit an existing FSM or clicking PlayMaker > PlayMaker FSM Editor has no effect other than greying out the main toolbar, nothing showing up at all.
I tried using PM in an empty project, the results are the same : no FSM editor window can be popped up. And again, the same project opened on my other machine works fine (including the PM editor window).
As a last attempt, I tried uninstalling and reinstalling Unity, but to no avail...