"stack backup file" error message

[paulgabel]

All of a sudden, every time I use command-s to save I get the message:

Can't save stack [my main stack] due to an error: can't open stack backup file
Check the file path, and make sure you have sufficient permissions.

I make frequent backups during the day (saved to an external drive), so I went through them in backwards order (newest to oldest), but as soon as I opened them and saved I got the same message. Result: I have no copies of my stack that will save. All other non-related Revolution stacks open and save fine.

I don't know what to do. The User Guide doesn't even contain the word "backup" or "backup file," so it is no help. (Is there a place where all error messages are explained in more detail? If not, there should be.) The file path goes straight back to my desktop where my stack resides, so I don't see where having "sufficient permissions" is an issue. What can I do to regain use of my stack which I've been working on for several weeks?

iMac Intel
Mac OS X 10.4.10
512 MB

TIA Paul Gabel (recent convert from SuperCard)

[Mark]

Hi Paul,

Rev makes a duplicate of the current file into a new file name.~rev before saving the stack. If it cannot create the ~rev file, you get the error you mention. I see this error quite often and don't know why Rev would be unable to create the file.

Can you save a copy of the stack in your documents folder? Choose Save As... from the file menu.

Best,

Mark

[paulgabel]

Thanks, Mark. Your suggestion worked perfectly. I hope I don't run into this one again.