I have a problem with a new development site that I am setting up to troubleshoot a site. The URL is the same so there should be no problem with the tables and the site otherwise appears to work OK. I copied the old tree elsewhere, installed from the bottom up - new 3.2.1 install, with themes and plugins installed manually from zips etc.
When I go to the Dashboard, a few plugins need updating since I have copied older zips. Most of these update OK but Subscribe2 and Wordprees Importer, on updating, report the invalid header error, deactivate themselves and disappear although they are still in the plugins tree. I have seen this before.
I am puzzled by this as both are current plugins and known to work with 3.2.1 so it must be in the tables. The trouble is, knowing where to find them! Is the information stored in the
XX_options table? Or where and how does WP know which plugins (and themes) are available?
Could someone please direct me!