First, I would upgrade your site from mambo 4.5.2 to Joomla since these two are almost identical.
I first upgraded mambo 4.5.2 to Joomla 1.0 and then upgraded Joomla 1.0 to 1.4.
***Do not upgrade it to 1.5 There are bugs in it that kill CB which will be fixed in 1.6 which will be released in a week or so***
The upgrade from an old version to CB RC2 was very painless. Just follow the instructions found on the site.
If you are talking about gallery2 then it could not be easier. I am using the gallery2 bridge at opensource.4theweb.nl. Michael over there has just released a plugin for CB over there that ads a Gallery tab to show what pictures a person uploaded to the gallery.
Jon
Post edited by: jonboykayaks, at: 2006/01/08 02:02
I dont think RC1 and J1.0.5 are supposed to be compatible either..
I can be wrong, but just try registering a new user on your RC1 j1.0.5 site and u'll know
RC1 to RC2 should be a breeze... a really easy upgrade.. checkout other posts around here for more info on upgrading from rc1 to rc2.. if you cant find much.. its because its so easy