Jusst did a Mas 90 4.5 Upgrade for a client. All their machines were recently rebuilt with Windows 7 64 bit and are running Microsoft Office 64 bit. All machines are working fine except one. When any Mas user goes to export a PO to a PDF an Outlook error pops up saying ""Either there is no default mail client or the current mail client cannot fulfill the message request. Please run Microsoft Outlook and set it as the default mail client."" We have tried everything in the Microsoft Knowledgebase including, reinstalling office, editing the registry per a KB article, reinstalling the Mas workstation, running outlook in safe mode, disabled all outlook add-ins, and deleted the users profile and reinstalled the workstation. This issue doesn't happen with any of the other machines and the same user who gets the error on her machine doesn't get the error on another machine. I know there is more than likely an issue because it is Office 64 bit but it works fine on the other machines.
Any suggestions will be greatly appreciated.