[Clas_offline] problem with spheres in GSIM

[Silvia Niccolai]

Hello, 
while working on implementing the eg1-dcs polarized target geometry in 
GSIM, I found out that interactive GSIM doesn't display spherical volumes. 
After discussing with some collegues and looking through the old GSIM 
mailing list, I figured that this problem was known since the year 1999, 
is due to a bug in GEANT3 and it doesn't affect only the visualization of 
the spherical volumes, but also the stepping of particles through it 
(message from Franz Klein of the 30th of July 1999). 
Still, I need to put a spherical shell into my pol. target geometry...
Has anyone found a workaround/fix for this problem? 
Thank you and best regards, 
Silvia