Does this happen with the final release of GarageSale 8.1.1 as well?
If yes, can you open the Console utility (under /Application/Utilities), and check whether you see any output from GarageSale there? Use the search field in the top right of the Console window to filter for GarageSale output.
The beta is after the 8.1.1 final release? It has been random and i can’t say when it started so I didn’t report it earlier. The total lock was today and on Tuesday it allowed me to us after clicking the “OK” button. Today as I noted, I have been able to keep it running by clicking the “do not show…” box. Before that I was only able to use GS for a few minutes and it would throw the box up and locked up tight when I clicked “OK”. There are 2 crash reports in the console.