Strange Error: Cannot Edit Field

We are still encountering a few errors. The screen shot below is an example. Any ideas on how to avoid this?

Cannot edit field CapEx, Cannot

By itself, this error doesn’t indicate anything other than that an error occurred, and that apparently this database is no longer open on the server. It might be helpful to enable logging on the server, then perhaps the server log would provide a more useful clue. I explained the logs in detail in class last spring.