I've been searching around for solutions to this, but only found suggestions for Windows versions below XP. Apparently this is an age-old issue.
This is the error message:
"The procedure entry point ThunkConnect32 could not be located in the dynamic link library KERNEL32.dll."
For me it started, when I tried to launch the program Fraps about 9 months ago. Tried to find a fix, but found nothing of use. I figured I don't fraps so much I can live with the error message popping up.
A month or so later the same message started appearing (3 times consecutively) when I launched any of my installed games. I clicked "OK" and the program launched.
As of today I also get the error message, when watching videos on YouTube using the Opera web browser. Again, clicking "OK" allows me to continue.
I do not have the option of reinstalling Windows 7, and I currently don't have access to my repair disk, so I need to find a solution to fix the error in the .dll file, or replace it with a functional one.