InPixio Photo software reports File not found message when trying to save project in Cloud based folder such as OneDrive (Dropbox, Google Drive, pCloud, Mediafire, BOX or other) service:

Make sure to allow access to all InPixio Photo apps to this folder through Windows Defender Security Centre by selecting "Allow an app through Controlled folder access." option.

This will whitelist the apps allow access to edit, create or remove files from this protected folder: