Void SyncContacts(Boolean) line 1761. The added or subtracted value results in an un-representable DateTime. Parameter name: value.
Our plugin does support Outlook 2007 and it does support SugarCRM 4.5. It would appear that your installation of SugarCRM is returning invalid data from their SOAP API. Could the problem be an invalid birthday for one of the contacts?
Please contact our support staff for personal assistance. Since this is a data issue, they will likely request to be able to login your your instance of SugarCRM and view the data first hand.