An update: I had not tried running the Compatibility Troubleshooter on
the Dymo App (duh!). This ran and suggested using Windows 8
compatibility settings, with which it now appears to be working (though
it did run before on first installation, and th...
I am having major problems with my 400 Turbo under a clean install of
Windows 10. After installing the software, I ran a few tests and
everything seemed to be working. I didn't subsequently need to print any
labels for a while. A couple of days later...