Here are some of the things that I did to fix my errors.
Error number one was "Object reference not set to an instance of an object" every time I would bring up the print dialog box to choose the Dymo printer.
This would happen when I loaded this object in VB.net:
What was happening is that I didn't include all the dll files in my application.
All the dll files you need are installed with the Dymo Label application in this framework folder:
C:\Program Files (x86)\DYMO\DYMO Label Software\Framework
These dll files are not included with the SDK download. The SDK is just samples and documentation.
I'm not sure if I needed all the dll files, but I decided to cover my bases and just grab them all since they are small.
The dll files you don't see added were rejected when I did the …