I used to get the same message whenever I had previously viewed the file using the Windows File Explorer, Internet Explorer or both... for some reason, it would hold the image in cache, forcing the system to put it into a "protective" mode to prevent overwriting.
My quick workaround was to Select All, Copy, and then Save all layers and objects to a new temporary FW file with a different name (i.e. filename.recovery.fw.png). After you should be able to open and compare to make sure everything is good, then clear browsers' cache and trash, restart the computer, and confirm your new file is intact.
Thanks anissa_thompson. I’ll give it a try. It gives the same error though if I’m creating a new file - just won’t let me save it.
@grahamc62789647, I've had to do the following at various times with applications like Fireworks, Photoshop, and Animate (and even Word):
- Create a new document with the same dimensions as the original, and copy/paste all layers in (this worked better with symbols).
- Duplicate the original file and save with a completely unrelated name in a different location.
- Double check and ensure that I didn't have embedded/placed/linked files within my working file that may be convoluting the save process.
- And last but not least: "Simply close the Fireworks program and click 'yes' to the Save prompts".