.OBJ export error

Hello,

When I tried to export a model as .obj, I got this error message:

http://kepfeltoltes.hu/thumb/160328/exporterror_www.kepfeltoltes.hu_.png

If I try to expot an another model it is working. I get this error with only this one.

Can help me somebody ?

Are you able to read posted here error message? Should this small image be a link to full screenshot somewhere, this does not work unfortunately.

Your screenshot is a thumbnail. I can’t read it.