Last week clients called to complain that they weren't able to edit their list items, or create new ones and that they were getting a weird error.
When I go to see what they were talking about, sure enough, the error was "File not found".
Nothing was updated nor changed that would have caused this issue.
When I checked the hive log, this is what I got:
Leaving Monitored Scope (Request (GET:https://site/_layouts/listform.aspx?PageType=6&ListId=%7B56919130-7707-477F-A3CE-6EAA889085BE%7D&ID=206&IsDlg=1)). Execution Time=80.9999594920584 d9c0298a-4046-4c66-8e63-fcee8816288f
09/28/2012 11:51:44.14 w3wp.exe (0x0CB0) 0x0D54 SharePoint Foundation Monitoring nasq Medium Entering monitored scope (Request (GET:https://site/Lists/Contracts/EditForm.aspx?ID=206&IsDlg=1))
09/28/2012 11:51:44.14 w3wp.exe (0x0CB0) 0x0D54 SharePoint Foundation Logging Correlation Data xmnv Medium Name=Request (GET:https://site/Lists/Contracts/EditForm.aspx?ID=206&IsDlg=1) 2bbf6fbc-f062-454e-8610-297061bc97e4
After the weekend, I narrowed it down to the Multiple Lines of Text column. Whenever it is set as the Rich Text or the Enhanced Rich Text, it gives the error. But whenever it is set to Plain Text, the list forms work fine.
My question is, has anyone encountered this problem? What was the solution?