I had a similar issue previously with a different hosting service, (IxWebhosting), and was advised that the problem might be with the hosting service. I moved to a new hosting service, Siteground, and started rebuilding my site and everything seemed to working fine until a couple of days ago. I had also been told previously that I might have too many fields in the database and so I rebuilt by site and cut the number of fields by quite a bit. I think I only have about a quarter of the fields I had previously. The problem is similar in that, after adding some data to a field and clicking "Update," I get an error message.
It was suggested previously that I use something like RSForms and I looked at that but that seemed to lack a lot of the capabilities that I wanted/needed that Community Builder provides. I could not see how to make that work. I was hoping that rebuilding my site with less fields in Community Builder would help but apparently not. I have attached a screen shot of the error message.
Siteground investigated for me and here is what they found:
"We have reviewed your issue in detail. We have traced the execution of the process that returns ISE error message. It seems that the content under all tabs of the "Write/Edit my story" section is saved in single Mysql row, which is currently exceeding the allowed limits since you have already added quite some content to your "Write/Edit my story" section.
The trace that we have performed is returning the following results:
