[Koha] error installing koha2.3

Dear Koha Comunity, I have this error: "Can't locate ZOOM.pm in @INC " when trying to install koha2.3 on both fedoracore4 and redhat enterprise9 but this error didn't happen when i installed koha2.2.5 and 2.2.6rc2 does any one knows what this error is? I also have another question: what is the differences between Koha2.3 and Koha2.2.6rc2? thanks all, _________________________________________________________________ Don’t just search. Find. Check out the new MSN Search! http://search.msn.click-url.com/go/onm00200636ave/direct/01/