I've tried manually upgrading Magento from 1.7 to 1.9.1 by following the steps I found on StackExchange (shown below). This included moving all of the /app/etc/modules and /app/code/community etc.. and using a replica of the existing database (running the installer on the existing database to update it) - however NO custom extensions are showing as installed or working on the site. When I go to the Magento Connect Manager there are no community modules installed. Does anyone know if I'm missing a step here??
These are the upgrade instructions I followed:
Does anyone have any ideas on this please - specifically why the extensions haven't transferred over and how you're supposed to upgrade with respect to extensions?