APEX

Hi:
APEX 4.1
I have a page with 2 regions. The first region is built with custom SQL using the APEX APIs. I have a process the can successfully update records.

I built the second region with the tabular form wizard. This created the multi row update process.

I created a region button and the two process respond to that button: process for first region, then process for the second region.

When I add data to the second region and click the region button, I get the following error:

Current version of data in database has changed since user initiated update process. current row version identifier = "A884FA378C851786DDFE3A33709CB23C" application row version identifier = "9ED06A0F09F80F054AB781CA24CC4CBF"

I know it has something to do with these two types of regions being on the same page, because when I create a page of just the table form, the data is updated.

Can anyone suggest what I might be doing wrong?

Thanks.