How can I tell PT10 to ignore a Playback Engine option - Elements Organizer 12?

Really strange happenings in PT 10.3.7:



When I am online and I launch PT10, it (randomly, not every time) will see Adobe Elements Organizer 12 as its Playback Engine (!!!) and thus states "the current Playback Engine does not support 48 kHz"... Wha?!?



I then choose my really PE from the dropdown. Then every subsequent PT session I open states "your IO has changed..."



Workaround: I go offline. But Why should I have to? Why is PT seeing this as a PE in the first place?



Hence, how do I delete this option of a PE from the dropdown list?



PT 10.3.7

Mac OS 10.8.5

MacBook Pro

Motu Ultralite Mk3

Grace Audio Lunatec V3