Report bugs found in TunerPro. Please be sure to include as much info as possible, including system specs, OS, repro steps and TunerPro version number.
I'm afraid I have no other suggestions for you. I've never seen that screen (and it seems quite strange [suspicious] for the CRT to pop that up itself). Version 4.x use static runtime linkage, so I have no idea how you could break it.
Nothing else was installed (no other apps, windows updates, etc) between your previous session and this one?
You said you've reinstalled TunerPro?
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TunerPro Author
1989 Trans Am
According to this article: http://support.microsoft.com/kb/307817
... it's possible that some other application is conflicting with TunerPro's use of the CRT. This, again, suggests that something else changed on your PC between last night and today.
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TunerPro Author
1989 Trans Am
Beware of Microsoft update or any other program that has settings to automatically make changes.
Been bitten by that several times. Now I turn all that stuff off and only change when I want to update.
Had the exact same problem. Ended up being a corrupted settings file in my appdata folder. (Do a search for TunerProSettings.dat and include hidden files). Deleted the file and it started working again.