500 Internal Server Error on Web Server for subpages

Try to edit your /public/.htaccess and add a question mark. Some servers don't do rewrite without it.

Code:

RewriteRule ^(.*)$ index.php?/$1 [L]

or

Code:

RewriteRule ^(.*)$ index.php?/$1 [L,QSA]

Thank you jreklund!!! By itself, adding the question mark didn't work, but I tried enabling the RewriteBase / line and hey presto! IT WORKED!
Thanks a million.