The database is in an unrecognized format
This error occurs when trying to open a newer Q2Q utility without either MS Access 2013 or the free MS Access 2013 runtime. You need to install one of these Microsoft products to have the utility work. If you don't have MS Office 2013 or higher the free runtime will work.Download and watch the installation videos from the Desktop Installation page.
If you get this error again after installing and confirming MS Access 2013 free runtime is installed see the File Association Help video.