Not sure what to tell you. You've not installed CB correctly and looks like corrupted the file structure. Uninstall ALL of CB, the modules, delete the database directly, check component folders and delete any remaining traces.
Once done cleaning CB out; restart the installation process, but by following the installation guide very closely. You can find the install documentation
here
.
Upgrading CB if on Joomla 1.5.x is as simple as installing it through Joomlas extension manager as if CB had never been installed. It will upgrade your installation for you, you do not need to use expert upgrade on J1.5.x.