Hello Sergey,
I update GUI Editor, but I still have problem with two monitor and with item relation on popup.
More, crestron importer still create multi-command/feedback (and not only join connect to touchpanel/xpanel)

OS: Windows 8.1
GUI Editor 2.1.1.16353

In Windows 8:
when I apply an effects on popup and I exit from window pressing "OK" button, the effects are not saved.

In Windows 7 with GUI Editor 2.1.0.15892 the effects saved.