Yes, windows 8 too... Argh...
Edit: Oh, I think I just found a solution.
When I received the controller I installed the drivers contained on the mini-cd. After this I have set-up the controller in dolphin and found the same problem as you.
When I saw that windows 8 could be the problem, I just uninstalled the driver, launching again the .exe from the mini-cd, and now it seems to work just fine, no more crashes. It is weird, but maybe it was a conflict problem between windows drivers and mayflash drivers.
I only tried like 30 min, so maybe my joy could be fake, I will do more tries and come back here to say how it is.
Edit: Oh, I think I just found a solution.
When I received the controller I installed the drivers contained on the mini-cd. After this I have set-up the controller in dolphin and found the same problem as you.
When I saw that windows 8 could be the problem, I just uninstalled the driver, launching again the .exe from the mini-cd, and now it seems to work just fine, no more crashes. It is weird, but maybe it was a conflict problem between windows drivers and mayflash drivers.
I only tried like 30 min, so maybe my joy could be fake, I will do more tries and come back here to say how it is.