I have a status indicator webpart on two different Home.aspx pages in my site collection, both pointing to the same status list. The main site contains another site, and the sub-site is where the status list is saved and maintained.
When I edit Home.aspx for either site this error message appears in the status indicator webpart right above the column headers:
After modifying the page and saving it all of the webparts disappear and the page can't be reloaded or it returns an error box. In order to change the page I have to go to All Site Content and restore a previous version of the page in question.
Why does this happen? How can I correct this?
Edit: Here's an interesting development. I re-added the webpart and saved the page, then went back in and made some random change to the text on the page, and while I still got that string of text in the webpart that I think indicates an error the page saved properly and displayed my changes with no problem. Could it be that the order in which the webparts are added to the page is significant?
Edit 2: I just got an E-mail from another user who tried to modify the home page for the main site and got this error after clicking the edit button:
I tacked "?contents=1" onto the end of the page's URL and manually deleted the only two webparts on the page: an RSS Feed (which has never worked as it looks like it's constantly updating, something with the AJAX I think) and the failing webpart originally referenced in this question. After deleting the webparts she was able to edit the page as normal.