Missing all plugins in plugin management area

Hi. I’ve just tried to fix a memory error by altering the wp-config.php and wp-settings.php but with no luck. I changed them back to their original settings and uploadedthem again. I now can’t see any plug-ins in my plugin management area and have an error on the dashboard “Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 7680 bytes) in /home/mydomain/public_html/blog/wp-includes/kses.php(413) : runtime-created function on line 1”. My blog doesn’t seem to be affected and plugins are still operational. How can I get the plugins back in the management area and get rid of the fatal error message. Any help appreciated.