....are you using a Dell computer..even if its not it sounds like a glitch in the panda 3-D not letting the python thing load...theres good info in the faqs/forum at
http://www.panda3d.org, which mentions on one, that you might have an anti-virus program that blocks the Python process from loading...
"..might try to shut down your anti-virus just long enough to see if it works without it." ..but mebbe you could add potco to your anti-virus exceptions under the advanced options in your anti-virus program first.....
Also, I had problems with crashes,,,I don't remember a particular error....but my "fox" browser was the problem, as I switched to a popular search engines browser..and it cleared up the problem with crashing after loading game....but go to the panda3D site...good luck.