openfoam blockmesh

i cant able to create the blockmesh in OPENFOAM it showing like polymesh cant be written i made display the error in which is displayed in the terminal.


Creating block mesh from
"/opt/openfoam201/tutorials/incompressible/icoFoam/cavity/constant/polyMesh/blockMeshDict"
Creating curved edges
Creating topology blocks
Creating topology patches

Creating block mesh topology

Check topology

Basic statistics
Number of internal faces : 0
Number of boundary faces : 6
Number of defined boundary faces : 6
Number of undefined boundary faces : 0
Checking patch -> block consistency

Creating block offsets
Creating merge list .

Creating polyMesh from blockMesh
Creating patches
Creating cells
Creating points with scale 0.1

Writing polyMesh


--> FOAM FATAL ERROR:
Failed writing polyMesh.

From function blockMesh
in file blockMeshApp.C at line 336.

FOAM exiting

ya its fine my problem get corrected thanks for your valuable reply....

with regards
kirubhakaran