Dmitry-

> - I use VFP 5.0.

Check your 5.0 version. The best version to run is Build 415.

> - There are many tables in a form's dataenvironment, and there are all connected with relationships. Do You think it can affect to a report's behaviour?

Does the report's DE have the relation's property OneToMany set to .T.? The default is .F.