rightfax plugin prevents vaulted emails from loading properly

when opening a vaulted email with the rightfax plugin enabled (which isnt really in use since its not a new email to send a fax for):

"there was an error loading this item -- some functionality may not be available"

then: "the handle is invalid. 80070006"

disabling the rightfax plugin restores normal functionality of vaulted emails. the plugin is necessary for enterprise faxing.

is there a way to supress the vault from interacting or loading plugins on vaulted email messages?

rightfax plugin:

file:///c:\program files (x86)\rightfax\/client/outlookaddin/outlook2010addin.visto|vistolocal

appears to occur with outlook 2010 only