Saw TC's message also, and I don't know what might be wrong either. For whatever the reason was, my version recently dropped its link to the TA-lib, so "?NAME" started appearing all over the spreadsheet. Took me awhile to figure it out and fix it, but I still don't know why it did that. As TC suggests, I would just start with a clean copy, since you could have done something inadvertently that is causing the problem. If it is just data, you could then copy that from the old version to the new, so you wouldn't have to re-enter it manually.