Cannot save file, says file does not exist
Just got a refurb 2015 MBP 15.4" Retina, completely clean install of Sierra, and just bought Logic 10.3.
Every time I try to save a project, I get an error message saying that the "file cannot be saved, file does not exist", which is clearly not true as the file is open and I am working on it currently. I'm saving all of my projects to an external 2TB HDD.
I've tried a previously posted workaround wherein one makes an alias of the folder they're attempting to save to, then renames it "Logic" and replaces the stock folder in User>Music. Error message persists.
Anyone have any insights?
MacBook Pro (Retina, 15-inch, Mid 2015), macOS Sierra (10.12.3)