[Plugin: WP-Stats-Dashboard] IT CRASHES EACH TIME ON INSTALLATION

Each time I try to re install, it the site crashs and shows an error message of not enough memory, but that’s impossible, because I just made a considerable upgrade to my server.
Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 30720 bytes) in /…/wp-admin/includes/theme.php on line 291
Possibly I have to check the installation procedure.

Then after desintallation, some cache files stayed in the server.
I tried to give 777 but it doesn’t allow to change parameters. I tryed to reinstall the plugin, but it crashes. How can I remove those files.

Thnx