Hi Joerg Wenck,
I don't know what is going wrong....
But perhaps MyIE blocks StrokeIt. No problems on my system.
Do you set the draw button to middle mouse ? Does this help ?
(StrokeIt - Command Editor -> Edit -> Preferences -> General)
When you want to test if StrokeIt works.
1. Save your configuration from MyIE and deinstall it.
2. Save your configuration from StrokeIt
3. Deinstall StrokeIt.
4. Delete your StrokeIt folder.
5. Reboot.!!
6. Install StrokeIt again.
If this not help then I don't know ..........
with best regards
Leo