Adding Task Form Fields to Approval Step

Question

I created a SharePoint Designer workflow which handles the approval of list items I would like to have some extra site columns added to my approval form.
When I do this in SPD I can add an existing site column (sometimes a few more) but after a while I'm getting the following error when I try to save the workflow:
Could not save the field changes to the server. The Object has been updated since it was last fetched.
When I get this errorI have to close the Site in SPD. Reopen it and try again. After while I then have all my fields on the form. So I can still get the job done, but this is quite annoying.
Anybody else having similar problems? Did you find a better workaround?
I'm using SPD 2010 and SP 2010

Answer 1

Ok, I found the cause of the problem.
When you use an already existing site column then 90% of the time SPD fails to handle the column.
If you however create a new field then it SPD simply works. This is a bit of a shame as the columns already exist in my site. Remember I just wanted a column used by my item to be displayed on the task, and therefore the field already exists.