Can't use gp interface

edit

I'm running Sage 6.6 on Windows as a virtual machine in VirtualBox. I can't use the gp interface:

sage: gp("3+3")
Traceback (click to the left of this block for traceback)
...
OSError: [Errno 2] No such file or directory: '/tmp/tmp5koDDd'

Does anybody have an idea? Thank you!

Ok, seems to work again after restarting...