Hi dear customer.
After updating P3D 5.1 we found some problems with P3D 5.1 and previous  EZCA 3.1.0.38 version. 

After updating P3D, EZ will try to access the simulator resources and the operating system will silently close both applications without any warning.

Solution:
Just update EZCA to version 3.1.0.40

EZ latest version  is available on our  downloads page.

This is Simforums thread for discuss about this version.