Unity Crash.. Access Violation... where to start debugging ?

Hi,

We are company developping an application using Unity since 3 years.
Since a few weeks, we sometimes have a Unity Crash (no specific defect scenario is related to this).
Unity simply crash and create the Crash folder with de related information.
This crash event occur on the Release Build but we were not able to reproduce the problem on the editor.

The error message is :

UnityPlayer.dll caused an Access Violation (0xc0000005)
in module UnityPlayer.dll at 0033:ee74266e.
….
Read from location 0000000000000010 caused an access violation.

But… where to start debugging ? (we do not use any unsafe code…).

In attachement : the error.log file.

What can we do ?
Create a debug build and try to reproduce the crash ?
Identify specific information in the error.log file ? Which one ?
Get a Unity Premium Support licence ?
Is there a specific strategic approach for this kind of error ?

4784042–456638–error.log.txt (65.7 KB)

The log contains the call stacks for all the threads including the one that crashed:

There should also be a crash report

Also please file a bug report.