Event and Action Extension refers to invalid extension points
The event extension and the action interpreter extension refers to the old ModelLoad eclipse extension point.
I would actually suggest to re-release SimuLizar 5.0.0 after the issue is fixed.
The same issue exists for the power extension of Simulizar. Certainly not as critical as the issues in Simulizar itself, but I suggest to fix the issue there as well.
I am also experiencing this issue.