In photoshop, I am able to open certain save files on the cloud drive, but others will give me an error message claiming that the files are not supported or that there was a problem reading the layer data. I can still view the file online in Photoshop beta, but that also will not allow me to edit.
Sorry to hear you are hitting errors. Could you share your OS/browser setup as well as any screenshots of the errors you are seeing? Also, if you could share one of the files that is giving you issues we can have the team look into why it is causing the errors.