Even if I take a file that works on my 'good' laptop and copy it to and load that directly from the 'bad' one, the problem is the same.Try opening and comparing the .ign files on each PC with a basic text editor and check they look identical. If your not sure hew to do this you can email them to me and I will check them for you.
The Ignitech software just doesn't run right on the 'bad' laptop, no idea why it is only a year old and running Windows 7 and works fine on everything else - I have tried deleting/re-installing etc. to no avail and Ignitech said they'd never seen the problem before.
However I'm certain it's an IT/Windows/Samsung problem rather than an Ignitech one but it had us stumped the first time I took the bike to the dyno as it just wouldn't run right and we didn't have another computer at the time.
We did initially suspect the Ignitech unit to be faulty as swapping it with a known good unit from a running bike cured the problem, however re-programming mine from another PC also cured the problem and it's been fine since.