Dwight wrote:
That is a backup file. the extensions are different : .pln for the active file versus the backup .bpn
On Mac, recognizing these things is pretty easy. So, what Dwight says is all a Mac person needs to know.
On Windows, this has been complained about for years. By default, file extensions are not shown in Windows. You can enable them in Windows Explorer. Or, you can display the Open dialog in 'detail' mode and read the file type column.
Also, if you have not assigned a preview image to the file, then the standard AC icon is used in Windows and you can recognize a backup file by the red arrow in its icon.
In spite of years of requests, GS still has the File Open file selection include PLN as well as BPN, so if you see one you see the other. One day they will 'get it' and have two entries -one for project files and the other for backups.
Please vote here:
http://archicad-talk.graphisoft.com/viewtopic.php?p=42834&highlight=backup+file#42834
Cheers,
Karl
One of the forum moderators
AC 28 USA and earlier • macOS Sequoia 15.2, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB