This has worked for me for problems with the Decodes Window....Per Laurie.......Probably the easiest fix is to delete the decodes database before starting JTAlert. You should only need to do this the once. Delete all files with a name starting with "decodes", there may be up to 3 files. In the following directory %localappdata%\HamApps\JTAlert\YOUR_CALLSIGN\Decode\