Hi Thatsastrat,

What are the exact words of the error messages?

Also, are you selecting the Lambda as a MIDI device, or audio?

I wouldn't bother selecting it as a MIDI device, unless you're using its MIDI Output port to send notes to a hardware synthesizer.

If you're selecting it in the Audio section of Preferences, it'll be worth trying its ASIO driver, as well as MME. One might work better than the other.

I haven't talked to anyone using these old Lexicon units in a while, but do remember them having some issues years ago, and it doesn't look like they've updated the drivers since 2010, so I wouldn't be surprised if there are still some problems.

Thanks
Kent
PG Music