After the unsuccessful attempt(s) to upgrade to 2.2 I tried a 3d time -- editing and retaining config,wp-content and htaccess in TextWrangler BEFORE uploading the fresh WP package. That helped. But going to the site/blog1 still shows a blank screen.
I was able to access /install.php and upgrade.php and can get to my Dashboard using the ReadMe on my web host's files. Everything seems to be there including directories for my themes and plugins BUT when I go to Themes or Plugins from the Dashboard nothing is there. On the web host the Theme folders include all their files, my header picture for Water Theme, etc. Plugins are in the folder (yes, I deactivated all of them originally). In WP they are being ignored, I think.
Site is http://7colorlagoon.com/blog1.
This has been a long process and the end is glimpsed but something is still awry. Help is still needed but maybe it will be easier now.