It's possible that your activation has been corrupted. Is this a retail version or license version of the product? Here is a link to some troubleshooting tips if the issue is related to a corrupt activation: http://kb.adobe.com/selfservice/viewContent.do?externalId=kb401043&sliceId=2
Lori Kassuba is an AUC Expert and Community Manager for AcrobatUsers.com.
http://kb.adobe.com/selfservice/viewContent.do?externalId=kb401043&sliceId=2
Lori Kassuba is an AUC Expert and Community Manager for AcrobatUsers.com.