I finally go this to work. Outside of FMP I started a print dialog and save a Left and a Right Dymo preset. Then in the Print step I selected this preset. Using the preset kept the selection even though I was unable to select right or left roll from within FMP.
Other than a pesky tendency to print a longer receipt than it should, the set up is working nicely. I hope this solution might help someone else wrestling to get FMP to play nicely with their Dymo printer.
I am having the same problem, also using FMP 11 on Mac OS X 10.5.8. I'm unfamiliar with how to set up a print dialog. Could you please describe exactly what steps you took to make this work. I'm incredibly frustrated!
Thank you in advance.
Sorry for the delay. I'm back from travels now and can help with this. With your Dymo powered and connected to your computer, open any program from which you can print. I used a word processor to accomplish this. Once the program is open create a new document. Open the print dialogue for the program and then select the Dymo. Select Dymo options and choose either the right or left roll from the Paper Source. Then from the Presets option, select Save As and name this set of features. You'll now be able to specify this saved setting when you go through the print dialogue set up in FMP.
I hope this helps.