May I know the error you are getting while updating it on your iPad.
there is actually no error notice. The program just never ends to load and the program icon on iPad is labeled "loading". The problem is, you cannot delete the icon, nor use the program. If you try to load it new again from app store, it starts again to load and never finishes loading again.
Thank you Klaus,
There seems to be a problem with Apple's updater. I have posted some steps here that may help:
Can you please try these and tell me if they work? If not, please let me know!!