Miguel,
Did you try to follow Jonathan's RPMS installation guide? It might be of help. It is good for RH6.2 and RH7.1
First glance at the error messages looks like the pltcl is not created properly by wrong location of library, try reading this thread and my posting there specifically.
For RH7.1 (assuming an "everything" installation), because latest Postgresql and libxml2 are both installed, all you need are (in order of installation):
1. aolserver-3.2-4+ad12+nsxml.i386.rpm
2. aolserver-postgresql-2.3-1.cvs.20010425.i386.rpm
3. openacs-3.2.5-2.noarch.rpm
Or you can just do: "rpm -ivh" for all the above rpms in one line
By the way, you might want to consider compiling your own Aolserver Postgresql driver, because the version available from the rpm is not current, check software download on this site for that.
Hope this helps.
Kenny
