DYMO 450 Not working after Mountain Lion update

You should contact DYMO, no one here would probably know.

New drivers supporting Mountain Lion here:

https://dymo.custhelp.com/app/answers/detail/a_id/101/session/L2F2LzEvdGltZS8xMz Q0MzMyNDQ2L3NpZC9WWnlFejQzbA%3D%3D#lw_mac

According to the Dymo Technical Support page for that model:

MACINTOSH

DYMO Label Software version 8.4.1

• New In This Release:
• - Latest version of DYMO Label™ software - Free download
• - QR and PDF options have been added to the available barcode list.
• - Minor bugs were fixed.
• - Support for Mac OS® v10.8 Mountain Lion

Have you installed the driver version 8.4.1 as mentioned above?

Hope this helps 🙂

I had the same problem, and the new 8.4.1 solved it for me. So g'head and install that, and you're all set.

The Dymo Software Label Version 8.4.1 does work with Mountian Lion but not straight away. It won't launch until you locate the driver via System Preferences>Print & Scan control panel. It the printer is on and connected using the + to add a driver and it will offer the new printer driver right away.

Once set up, the software will launch and all old labels ec are intact.

Hope this helps

David 🙂