paraFoam crashing when using Plot Over Line

I would like some help. I recently installed CAELinux 2011 and while doing post-processing for OpenFOAM tutorials, I found that the moment I use Plot over Line, paraView window crashes with the following message on the terminal (I am only posting a part of the message)

X Error: BadRequest (invalid request code or no such operation) 1
Extension: 154 (Uknown extension)
Minor opcode: 182 (Unknown request)
Resource id: 0x3e0b869
paraview: ../../src/xcb_io.c:183: process_responses: Assertion `!(req && current_request && !(((long) (req->sequence) - (long) (current_request)) <= 0))' failed.


Any suggestions please?

Thanks in advance.

Sam

I managed to solve it by just rebooting my machine. I think it was due to the graphics drivers which after installation need rebooting the machine. I hadn't rebooted yet which I did and finally could solve it.

Sam