Wordpress killed htaccess mod_rewrite

I think that here is an incompatibility that doesn't allows me to run urls with the last rule. After I installed wordpress the other rules appeared and now wordpress returns 404 page when trying to run the last rule.
Can you help me?


RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]

RewriteRule ^myfolder([^/\.]+)/$ /folder/index.php?fb_app_id=$1 [NC]

 

Use plugins! It will solve your issues easily.

 

Maybe try this way:

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
RewriteRule ^myfolder([^/\.]+)/$ /folder/index.php?fb_app_id=$1 [NC][/FONT][/COLOR]
</IfModule>
# END WordPress

Code (markup):

Hope it works.