Fred Weiner wrote: "Copying the updated vDosMac.app into /Applications (overwriting the previous version) seems to have created a new ~/vDosDisk folder, overwriting the one there, wiping out my XyWrite files. Maybe I did something wrong? No worries, I got it all back from Time Machine. Apologies for seeking help, but I thought you should know this." I've now tried this on three different Mac systems running High Sierra and Mojave, and I can't reproduce the problem. The new version did absolutely nothing to the existing vDosDisk folder. I can't imagine what went wrong in your system. My AppleScript (which you can see if you open the application in the Script Editor) does not create a vDosDisk folder without asking you first whether to create it. The code is very clear about this, and in fact, the AppleScript is exactly the same as it's been for years. The only change in the new version is in vDos itself and its configuration files, and they don't do anything to change the vDosDisk folder. So I'm fairly confident that my new version didn't do this, but if anyone else reports the same problem, obviously I'll need to figure out what might be wrong.