Hello, <br>I'm having this problem, too. I have Ubuntu 11.10, installed Pymol 1.4.1. by using the Ubuntu Synaptic Manager. Pymol starts but I'm getting the following message:<br><br><br> Detected OpenGL version 2.0 or greater.  Shaders available.<br>
 PyMOLShader_NewFromFile-Error: Unable to open file '/usr/local/lib/python2.7/dist-packages/pymol/data/shaders/default.vs' PYMOL_PATH='/usr/local/lib/python2.7/dist-packages/pymol'<br> PyMOLShader_NewFromFile-Warning: default shader files not found, loading from memory.<br>
 PyMOLShader_NewFromFile-Error: Unable to open file '/usr/local/lib/python2.7/dist-packages/pymol/data/shaders/volume.vs' PYMOL_PATH='/usr/local/lib/python2.7/dist-packages/pymol'<br> PyMOLShader_NewFromFile-Warning: volume shader files not found, loading from memory.<br>
<br>What could I do?<br><br>Best regards, <br>Julian<br>