the first error message is causing the other two.
The error message is:
Warning: session_start() [function.session-start]: open(/home/users/web/b2155/ipg.morrobonsaicom/cgi-bin/tmp/sess_222f974c7c484a02058a145a1d6a15dd, O_RDWR) failed: No such file or directory (2) in /hermes/bosweb/web215/b2155/ipg.morrobonsaicom/install/global.php on line 2
It is not a scripting error. It is a server error. It basically means that the location specified in the php.ini file for the session.save_path setting does not exist. I'm surprised that your host would read that error as a scripting error. this portion of the error:
open(/home/users/web/b2155/ipg.morrobonsaicom/cgi-bin/tmp/sess_222f974c7c484a02058a145a1d6a15dd, O_RDWR) failed: No such file or directory
is saying the session temp file cannot be created because the location /home/users/web/b2155/ipg.morrobonsaicom/cgi-bin/tmp/ cannot be found.
the host will need to fix the session.save_path setting in the php.ini file.