Got my USB today. Thanks for the fast shipping / order processing, Mitty.

Seems to be unable to mine just in LTC mode, mines both just fine though. I'll tinker with it over the weekend.
No problem, glad it got there quickly & safely.

Did you make sure you set the tiny switch on the unit itself to "L" mode for Litecoin only?
Let me know if you still can't get it working and I'll contact DualMiner for RMA info right away.