I have just downloaded CALM and am setting it up to run for the first time. I have selected my source libraries and configured my target library. When I go to the Source Custom Columns tab and click "Get All Source Library/Custom Column Combinations" I get an error for each source library.
CantOpenError: unable to open database: <path-to-library>/metadata.db
I am running Calibre on Linux and have checked the permissions on the folder/files to ensure the are able to be accessed.
Thoughts?