I installed the latest active collab 3.2.12 and put ac_gitolite in the custom/modules folder and then proceeded to install it in the modules page. After the install completed I clicked on the 'Gitolite Settings' link per the instructions, but I get the message 'Failed to load page. Please try again later' I thought maybe this is because I have not run the gitolite.sh script yet, so I went into my console, navigated to the ac_gitolite folder,chmoded the script +x and typed 'sudo ./gitolite.sh' This failed with the message 'Unable To Change Directory For Hookspath'. So I looked in the script and noticed it is getting the path from the command line args and I didn't run the script using a full path so I next tried 'sudo /full/path/to/ac_gitolite/gitolite.sh' and this time it failed with the message "Can't create post-receive Hooks !!" and I still can't open the Gitolite Settings page.
My OS is CentOS (which the script detects as RedHat, but should be OK), also my apache server runs using the apache user not www-data from what I can tell.