I downloaded, extracted, then uploaded the xmasb-quotes plugin directory to my wp-content/plugins/ directory. I'm running WP 2.3.1, which is perfectly compatible with xmasb-quotes according to the compatibility list. I used cpanel to confirm that I have all permissions for all uploaded xmasb files. I then deleted the xmasb directory from my server, then re-uploaded it, then re-checked WP-admin's plugin manager, and still the xmasb plugin doesn't show up in the list of plugins available for activation. What gives?!?!