Hi,
I am happy that you got it working.
The new error about delay means that the PC high frequency timer does not measure correctly the time because it has not a stable frequency. Its frequency seems to vary from 2.5277 to 3.9458 MHz. This makes difficult for WxPic to measure precisely the small delays of few µs.
Have you some utility that modifies the system clock speed? If it is the case you should disable it when you are using WxPic. If this is a native capacity of Seven, there may be some parameter to disable it. Else I don't know why Windows would return different frequencies depending on the moment.
Philippe