What's VFP version/Service pack? 7.0 SP1

Are runtimes of the same version/Service pack as a development? Yes

What part of application causes the prioblem (printing, previewing report, entering or saving data, e.t.c)? Entering data, when a new record is added to a table. In another case when closing the app down.

All tables have been reindexed. Should I try recontructing the indexes?