I tried to reinstall without QuickEdit, but nothing changed.
So, enough. I have installed XAMPPLite and tried to run MODx with it. Aaaand... It’s much better:):):) Now everything is ok. At this moment i don’t see any problem. It’s just very interesting, what’s wrong with my old servers configuration...
Thank you for your help)))
What was up with those double backslashes in the path in your error message above?