Operating system? Have you read the FAQ? Do you have Google on your computer?
Try restarting your system and then give it a try.
If issue persist provide us with the following logs.
You can find them at:
/Volumes/%Volume Name%/Users/%Username%/Library/Application Support/Adobe/AAMUpdater/1.0
You can zip all the files together and send us through mail. This would help us in finding the root cause.