Dear all,

#       Are you running out of RAM?  That can appear like a freeze.  Try
#setting hash_max to something low like 50.
#
#set hash_max, 50
#ray
#
##I'm using the last version of PyMOL, which is very fast (!), but I
##encountered a problem with ray.
##

Thank you Warren, it is indeed working now. I had to set at 30, it takes a lot of time for *ray*, but it is working...

Also, an other question: I did some Python scripts to generate movies, but one thing I have difficulties with is to generate a movie which will make disappear one surface and appear an other surface in the same time. Any suggestions or tricks???
One part of the script I was using is:
i=1
while i > 0:
        if i > 0:
                j=1-i
                cmd.do('cmd.set("transparency",'+str(i)+',"surface1")')
                cmd.do('cmd.set("transparency",'+str(j)+',"surface2")')
                i=i-0.05
        else:
                print "done"

but the movie looks very odd, with shadows everywhere...

Cheers.
Leo
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