Is there a limit to the number of materials that can be put in a model?

[Dorit 0]

I wanted to know if there's a limit to the number of materials that can be assigned in a model. I used 149 materials in a model... and after assigning the materials into the simulation het model is not running, complaining about a GHB cell...

This is the error in the "out file":
   1056 TIME-VARIANT SPECIFIED-HEAD CELLS
 CELL (  6,  100,    2) IS NO FLOW (IBOUND=0)
 NO-FLOW CELLS CANNOT BE CONVERTED TO SPECIFIED HEAD
 

I tried to re-enter the boundary condition and to re-assign the materials in the LPF array.. and it didn't work. the only change I did is assigning the materials. Before that the model ran with no problems

Can someone had such a problem? do you have any direction for me to run this model?

I'll appreciate your help

Dorit