[A CFD free user]

Dear friends,

I have been working on fuel cell simulations for a while and I am good at it both fuel cell module and UDS and UDF code to model typical PEM fuel cell. In all my works, I employed 3 dimensional geometry and I faced no problem at all. Recently I started a new work and due to limited access to computational resources, I decided to work on a 2 dimensional geometry. But the problem is when I start running 2d simulation in PEMFC module in Fluent, I receive access violation error as following:

Error:
FLUENT received fatal signal (ACCESS_VIOLATION)
1. Note exact events leading to error.
2. Save case/data under new name.
3. Exit program and restart to continue.
4. Report error to your distributor.
Error Object: #f

based on my experience in UDF, I know there is something problem regarding PEMFC library code (the problem should be due to pem UDF itself). But, I don't know where exactly the problem comes up.
So, my question is anybody has ever any experience in working 2 dimensional simulation in PEMFC module? If yes, please help me to figure out this problem.

It'll be highly appreciated in advance