Thanks for your response but you seem to be getting upset I’m raising it - please don’t shoot the messenger. Here’s a couple of examples after googling the error message.
example of 187 error
Same error here. The site has been shut down although can be accessed via cache
and a similar one here - RW8 Bug in Photo Album - #4 by TatoSoftware1
It’s an intermittent problem which may well be specific to my set (as I said previously) but that doesn’t mean it doesn’t exist.
It’s not the theme (I tried a different theme), it’s happening with multiple files and restarting RW doesn’t totally eliminate it. This was from my first launch today opening from the Finder:
Closing and re-opening the file has resolved it this morning. The file which opens is definitely the correct file. I haven’t seen it happen when the file is closed in Edit mode.
For the record I’m on a MBP running Big Sur 11.5.1 and RW 8.9.1