I uploaded all my Logic Pro project files to OneDrive because my Macbook M4 was running out of space and I was already paying for Microsoft. I downloaded a project from the cloud to work on it, when a pop up message appeared saying:
"The document “___.logicx” could not be opened. The file isn’t in the correct format. The file might be corrupted, truncated, or in an unexpected format."
It said the same for every single project file I uploaded to the cloud. I asked Google Gemini how I can try and fix the problem and have tried methods like Compressing and Uncompressing, Manually Reassigning Logic Pro as the preferred application, and Forcing Logic Pro to Open the Package from inside the application. Another suggestion was to rebuild the package by selecting "Show package content" and dragging the media/audio files into a new Logic Project, the only problem is that the audio is raw without any of my edits, presets, or automations still in tact. Also, it only shows the audios, not MIDI, and most of my songs were created with MIDI.
I have no idea what else I can try, and I genuinely hope that 6 years worth of demos aren't lost forever.