I am using the latest version of Blender (2.90.1) on an iMac pro with Catalina 10.15.7. I'm working on a project and I save the file in a save folder i created under the file name "Relax.blend" all goes fairly well for a while and then one of the random times i figure i better save it there is a message in the blender info strip in red that says file type not supported, file saved with an "@" symbol. When i check my finder window for the save file there is only a file named "Relax.blend@" there for a save file. If i close and reopen blender and try and select the original "Relax.blend" save from the blender startup window it prompts with an unsupported file type and the option to select it again disappears (same goes for the drop down menu of opening recent files under the file menu once starting a new file; the option disappears) if I return to my finder window and attempt to remove the "@" and turn the extension into a .blend file it tells me there is already a file under this name. if i change the name to "Relax1.blend" it will then open properly again... then, sure enough, the same thing happens with the "Relax1.blend" file and again when i try "Relax2.blend". I have tried using search on my entire hard drive for any of the relax .blend files but they dont show up, and i can no longer name any files those names because they are already taken. so the computer both does and doesn't recognize the files existence; i cant name files the same name but also can't find the files to delete them. What the heck is going on!? Where are these files? at this rate im going to have 500 versions of the same file that i can't see using up space and names on my computer. does anyone have a solution or idea what is happening?