Problem with Avid DS output

Hello everyone,
My troubles begin with Avid DS after I try to output to tape. This isn’t the first time this sort of error appears to me but last time I somehow got rid of it and now it keeps annoying me. The message I get looks like this:
“Avid DS
Lower Hal could not be created.”

I can click the ok button or close it but it closes the whole thing either way. What should I do? Please help, thanks.
