[sajad6]

When I use openfoam turorials multiRegionHeater when I write blockMesh in terminal there isnt any problem but when I write chtMultiRegionFoam terminal write this :
/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 2.1.0 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
Build : 2.1.0-0bc225064152
Exec : chtMultiRegionFoam
Date : Oct 02 2014
Time : 12:04:55
Host : "sajad-pc"
PID : 1938
Case : /home/sajad/Desktop/multiRegionHeater
nProcs : 1
sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster
allowSystemOperations : Disallowing user-supplied system call operations

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time

Create fluid mesh for region bottomAir for time = 0



--> FOAM FATAL ERROR:
Cannot find file "points" in directory "bottomAir/polyMesh" in times 0 down to constant

From function Time::findInstance(const fileName&, const word&, const IOobject::readOption, const word&)
in file db/Time/findInstance.C at line 188.

FOAM exiting


what's the problem?is anybody now ? I exactly copy the openfoam tutorial and use chtMultiRegionFoam solver.why it write fatal error?