Weird PT 11 Crash while opening a session

[L-Mart]

Hi All,

Just checking to see if any of you have had the following issue:

A session I've worked on for weeks without problems have suddenly started to crash when being opened first thing after I launch PT.
Here's the weird part, if I open and close another session first, the "problem session" opens up fine.
(If I open while holding shift, it doesn't crash so it's probably a plugin thing)

Grateful for any feedback on this,

/L

Pro Tools HD 11.3.1
Yosemite 10.10.3
iMac
Sonnet Thunderbolt Chassis
HDX1

[Darryl Ramm]

First thing to try is trashing prefs.

[L-Mart]

Thanks Darryl,

Prefs trashed but problem remain.

I have restarted PT about a thousand times now and narrowed it down to a couple of instances of Auto-tune 8, when those are inactivated the session opens fine.
I have tried to recreate the bug in other sessions (by adding a lot of AT plugins but so far it's only happening in this particular session)

If anyone have any ideas, let me know.

/L