psychtoolbox and matlab 7 for windows

i have recently installed matlab (student edition) version 7 for windows and tried to run programs with the latest  psychtoolbox for windows, but the programs won't run.  Has anyone else experienced similar problems, or know which functions may be causing the bugs?
Thanks
 
Maxine
 
Maxine McCotter
Psychology Dept
Rm 518a
Boyd Orr Building
University of Glasgow
G12 8QB
Tel 0141 332 6276
email maxine@...