"error :430 class does not support automation on specified device" pop up appears, when perfor (4274753)

"error :430 class does not support automation on specified device" pop up appears, when performing manual mail switch
Manual Mailbox Switch fails with the following appearing in the EMWmigration.log:
3/15/2011 1:21:23 PM aeEMWGUIForms::CMBRedir::Class_Initialize Error: 430 - Class does not support Automation or does not support expected interface
3/15/2011 1:21:23 PM aeEMWGUIForms::CMBRedir::Init Error: 91 - Object variable or With block variable not set
3/15/2011 1:21:23 PM EMWMigration::CCollList::SwitchUnswitchMailboxes Error: (init aeEMWGUIForms.clsMBRedir fail)
3/15/2011 1:21:23 PM EMWCon::CModMisc::MsgBoxEx One or several mailboxes were not switched due to errors. See the log file for details.