S3 Eucon 3.5 issues with PT11

[Raul M!]

Good day,

I've got PT 11.3.1 and Eucon 3.5.0 for the S3 (Eucon 3.6 not compatible with PT11)
OS Sierra 10.12.5 on Mac Pro 5.1

When I switch from PT to any other application, the S3 "freezes" (faders, displays and meters)
Restarting Eucon (which in most cases stops responding) doesn't solve the problem.
Only restarting PT solves it.

Any known reasons?
Thank you

[EddieJones]

Do you have the lock to Application check boxes on ?

[Raul M!]

Yes, they are checked.
Trying out, I found out that with a previous lighter session this doesn't happen, but in my actual PT session, after switching to another application, when coming back to PT, the S3 freezes and when dragging the mouse over the Eucon app, there's the OSX spinning wheel and Eucon stops responding

[EddieJones]

I'm not sure what to suggest. It could be something in your session (a particular plugin, hidden tracks). I do know that we have fixed over 20 EuControl freeze/crashes in 3.6.0 and 3.6.1 but obviously you need PT12 for that. Sorry.