I found the solution to my WordPress 500 error by deactivating the plugins:
Here’s the details from Troubleshooting FAQs:
How to deactivate all plugins when not able to access the administrative menus?
Sometimes it may be necessary to deactivate all plugins, but you can’t access the administrative menus to do so. One of two methods are available to deactivate all plugins.
■ Use phpMyAdmin■ In the table wp_options, under the option_name column (field) find the active_plugins row
■ Change the option_value field to: a:0:{}
or via FTP
■ Create an empty plugins folder ■ Via FTP or your host’s control panel, navigate to the wp-contents folder (directory)
■ Via FTP or your host’s control panel, rename the folder “plugins” to “plugins.hold”
■ Via FTP or your host’s control panel, create new folder called “plugins”
■ Login to your WordPress administration menus
■ Via FTP or your host’s control panel, delete the empty “plugins” you previous created
■ Via FTP or your host’s control panel, rename “plugins.hold” back to “plugins”
I used the FTP method and was successfully in getting looged back in and activating the right plugins for sp 3.2.1. Website working correctly with the updates.
Thanks WordPress!