Go to the manufacturer's website only and check their Support pages, see if they haven't released a driver for your Lexicon and OS that is dated later than the one you are currently using. If so, download and install it following their directions.

Often is the case that Drivers, just like other softwares, get updated and rewritten to solve certain issues. Maybe this is the case here.

If it isn't, installing new drivers shouldn't hurt anything and is always reversible, its just software.


--Mac