It's a bug in 2.0.6's outgoing.pl. If you search outgoing.pl for "template_set" (I think there's only one occurance), you'll see a line similar to:
Change that to just:
The problem is that in the admin, the bounce template you're using is the bounce.eml from default template set, but on the GMail->template_set call, it's returning another template set.
Adrian
Code:
$something = GMail->template_set || 'default';Code:
$something = $CFG->{tpl_default};Adrian