Xpages, Error while executing Javascript action expression

This is ridiculous. Continuously getting the error below, all over the place in this app (web, xpages). Signed every which way from Sunday; replaced design. Removed code referenced in the Exception part of the page, but just get a different bit of code. Build automatically is on; have cleaned template, application repeatedly.

Have had it before and signing would (eventually) fix, but not this time. Utterly ridiculous. App has worked fine usually, but now that this is happening it’s chaos.

Can anyone suggest something? Error follows:

Error while executing JavaScript action expression

NotesException: Document has been modified or corrupted since signed! (data)

Subject: Update - Solved (for now)

I had seen Jerry Shelley’s blog about his experience with this problem. His solution has worked for me in the past (signing with user id), but no more. What did work (I think) was signing with the server id. Ridiculous, particularly as there were no security changes that would exclude my id (I have all rights anyway on the server).