Hi, where are you storing your source images? Are they on a networked drive or external drive, or are they in a folder that is synced to a cloud service? For maximum stability, we recommend you have your project files, cache, and source images on a local SSD that is not accessed by any other software or being synced to the cloud while you work.
Regarding “recovering the project” are you finding that the project is completely broken after receiving this message?