Thread:Project:Support desk/403 error, CSS mess, only on IE/FF, not on Chrome/reply (2)

This mediawiki is in a subdirectory, and the root folder is a wordpress install with some security rules (put in place by the Better WP Security plugin). Since I have absolutely no idea what any of these lines mean, I'll try pasting the rewrite rules I found on my htaccess, and maybe a kind soul here will help me find the culprit:

RewriteCond %{QUERY_STRING} \.\.\/ [NC,OR] RewriteCond %{QUERY_STRING} ^.*\.(bash|git|hg|log|svn|swp|cvs) [NC,OR] RewriteCond %{QUERY_STRING} etc/passwd [NC,OR] RewriteCond %{QUERY_STRING} boot\.ini [NC,OR] RewriteCond %{QUERY_STRING} ftp\: [NC,OR] RewriteCond %{QUERY_STRING} http\: [NC,OR] RewriteCond %{QUERY_STRING} https\: [NC,OR] RewriteCond %{QUERY_STRING} (\<|%3C).*script.*(\>|%3E) [NC,OR] RewriteCond %{QUERY_STRING} mosConfig_[a-zA-Z_]{1,21}(=|%3D) [NC,OR] RewriteCond %{QUERY_STRING} base64_encode.*\(.*\) [NC,OR] RewriteCond %{QUERY_STRING} ^.*(\[|\]|\(|\)|<|>|ê|"|;|\?|\*|=$).* [NC,OR] RewriteCond %{QUERY_STRING} ^.*(&#x22;|&#x27;|&#x3C;|&#x3E;|&#x5C;|&#x7B;|&#x7C;).* [NC,OR] RewriteCond %{QUERY_STRING} ^.*(%24&x).* [NC,OR] RewriteCond %{QUERY_STRING} ^.*(%0|%A|%B|%C|%D|%E|%F|127\.0).* [NC,OR] RewriteCond %{QUERY_STRING} ^.*(globals|encode|localhost|loopback).* [NC,OR] RewriteCond %{QUERY_STRING} ^.*(request|select|concat|insert|union|declare).* [NC] RewriteCond %{QUERY_STRING} !^loggedout=true RewriteCond %{QUERY_STRING} !^action=rp

Best regards! Felipe