DS Visualizer 3.0 Crashes on XP SP3 with ATI Radeon HD 3400

Hi, the program opens but crashes immediately if I try to open a Protein or Nucleic acid PDB file. Even when opening the sample files from the start page it starts opening and then crashes.

Specs:

XP Home with SP3

Intel E4500@2.2GHz

ATI Radeon HD 3400

2GB of RAM

Is there anything I could try?

Thanks for your help

best regards

dsj