Have used Base with a lot of success for about a year. Ran into a problem with other parts of OS and had to recover with DJ Backup.
Everything looks good on the first two screen. “Open a recent database file” sees the database file. tapping finish brings up the first screen Database and Tasks/Forms . Also the Database column has Forms highlighted and Forms shows the forms that were created - the list of forms is accurate.
But, if I try to do anything - like click on Tables get the following message or other items.
The connection to the data source “CUSJ-Database” could not be established.
Running : Ubuntu 19.4, mem. 7.7 Gib, intel core I3, Gnome 3.32.1,OS type 64-bit, disk SSC 240 GB