Hello
Can someone tell me what this error is in 2023 for win ? "Cannot create file FlashMessageLog.txt" Appears every time I want to close BIB and won't let me continue so I have to drop it. Alternatively, delete the existing txt file so that it can generate a new one.

Look for the file here: \bb\Data\Logs\FlashMessageLog.txt

Try deleting it or renaming it yourself in Explorer. This will most likely show you what the problem is (maybe the file is in use in another program for example), and BiaB will be able to create a new log file.