Something must have changed! What is different today?
Same PC?
Same cable?
Same instrument?
Any software updates or new installs?
Any changes to hardware (new printer, scanner, etc.)?
Has there been a power outage (thunderstorm)?
New staff (could be a training issue!)?
If this does not resolve your issue please click here to go to "My X-Rite" where you can create a new support case. One of our Technical Support Reps will then contact you for further assistance.