Suddenly I get this error when trying to edit an item from a list, also when I try to view it.
It happens on these files:
It happens when there is an ID parameter:
If I load EditForm.aspx or DispForm.aspx without ID they work, but this is useless, just telling you for debugging purposes.
I have no idea what to do. I have tried to replace the code from a working EditForm.aspx, this did not help. I have tried to delete recent columns I made,to see if they created a conflict, did not work
Can you help?