CFD Online Discussion Forums - mpirun error when using -parallel option

Dear all.

I'm beginner of OF., so please forgive me that my primary question.
I'm trying to calculate the flow in the channel, but following error occurs when execute mpirun with -parallel option.

Code:

 

 --> FOAM FATAL IO ERROR: 

 Expected a '(' while reading Tuple2, found on line 0 the label 0

 

 file: IOstream at line 0.

 

     From function Istream::readBegin(const char*)

     in file db/IOstreams/IOstreams/Istream.C at line 94.

 

FOAM parallel run exiting

The error will not appear when don't use -parallel option.
Please tell me how can I solve the problem.
(solver is pisoFoam, and parallel core number is 12.)

I thank you very much in advance for your cooperation.