>I had similar problems when skipping between parent records after manipulating child records in a Grid. After DAYS AND DAYS I solved the problems by selecting the PARENT table and the refreshing the whole page:
>
>blah blah blah
>select orderdetails && child table
>replace last_mod with date() && make change in child table
>blah blah blah
>
>SELECT ORDERS && Parent table
>THISFORM.REFRESH && refresh everything
>
>
>I hope this helps.
>
Hmmm, I don't dispute this approach helped you in your case, and it might help Ralf, but it's very much a sledgehammer approach. Depending on how data are buffered, if transactions are in effect etc. it could cause other problems.

IMO, to properly solve this problem Ralf has 2 options:

1. Step through the app in the Debugger and examine its state when the error arises. This is, by far, the preferred solution.

2. Post detailed information so other UT members have a chance to offer meaningful advice, e.g.

- Is he using a commercial framework?
- Is he using base VFP or 3rd party classes?
- Are the form grid(s) based on tables or views?
- How are they buffered, if at all?
- Is a private datasession in use?
- What is the code that modifies the child table?
- What is the code that attempts to save the modified child table and/or move the record pointer in the parent table?
- What modifications have been made to the base methods of the form and its controls?