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Dear colleagues,
 
I am using a NVidia Quadro4 XGL for 2 monitors. I have downloaded the Psychtoolbox 3 and I am experiencing sever difficulties to make it run. Most of the errors are related to OpenGl like "OpenGL error after flip: invalid enumerant". There are problems also with shaders and with synchronization. I have downloaded the recent drivers (at the beginning I could not even uses Screen(1,'OpenWindow',0);). The computer I am using is Dell Workstation PWS 650, Xeon CPU 2.8 GHz, running under Windows XP. I am using Matlab 7.01.
 
 
I will greatly appreciate your help.
 
Sincerely,
 
Nadejda Bocheva
Institute of Neurobiology
Bulgarian Academy of Sciences
Acad. G. Bonchev str. bl. 23
Sofia 1113
Bulgaria