Dymo Label v8.x Crashing in Windows 7

For a while, a friend of mine was having serious problems with her trusty Dymo Labelwriter 450 Turbo. She had upgraded to version 8.something and had converted all her address list to its new database format. Needless to say, she couldn’t go back to the old version (backups, anyone?).

Any time we tried to start the program, we would get a cryptic error message that started with this:

cannot create instance of ‘mainwindow’ defined in assembly…

After spending what seemed an eternity looking for ANY direction online to get the program to work on her machine, and trying everything from re-installation of the software to re-installation of .Net framework, I decided to try and run the program in compatibility mode. Wouldn’t you know it, it worked!

So if you’re at the end of your rope, try it:

  • Right-click the shortcut for Dymo Label
  • Select “Properties”
  • Click on the “Compatibility” tab
  • Check the box that says “Run this program in compatibility mode for:”
  • Select the OS you want to emulate.
This little gem can sometimes make programs, that just won't work correctly, start behaving like they should.

Compatibility Mode Window

I hope this saves someone a couple gray hairs in the future.

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