htaccess Rewrite Rule not working without index.php in url - .htaccess

Question

I am using apache2 in ubuntu m/c. I have enabled mod_rewrite and changed Allowoveride All in apache2.conf
Now I am trying to install Bug-Genie application in my server
But following .htaccess rules are not work as excepted.
I can access :
http://localhost/roxsoft/thebuggenie-3.2.6/thebuggenie/**index.php**/wiki
But I can't access : --404 error
http://localhost/roxsoft/thebuggenie-3.2.6/thebuggenie/wiki
Here is my .htaccess file:
# .htaccess file for The Bug Genie
# make sure that magic_quotes and register_globals is always off
<IfModule mod_php5.c>
php_flag magic_quotes_gpc off
php_flag register_globals off
</IfModule>
# rewrite rules
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
# Example:
# RewriteBase /
# or
# RewriteBase /dev/thebuggenie
# skip all hidden files (starting with a .)
RewriteCond %{REQUEST_URI} \..+$
RewriteCond %{REQUEST_URI} !\.(html|wsdl|json|xml)$
RewriteRule .* - [L]
# redirect to front controller
RewriteRule ^(.*)$ index.php?url=$1 [NC,QSA,L]
</IfModule>
# Stop people accessing directories they shouldn't have access to
RedirectMatch 403 ^/\.svn(/|$)

Answer 1

Try this:
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond $1 !^(index\.php|assets|images|robots\.txt)
RewriteRule ^(.*)$ index.php/$1 [L]
Add the folder which contains the JavaScript and CSS to the rewrite condition

Answer 2

Here is the solution I just managed it with. This may help if anyone had a same problem...
I just removed
and added additional conditions in htaccess
here is it:
RewriteCond %{REQUEST_URI} \..+$
RewriteCond %{REQUEST_URI} !\.(html|wsdl|json|xml)$
RewriteCond %{REQUEST_URI} !\.(jpg|png|css|js|php|gif|ttf|woff)$ ---- ADD FILTER CONDITION.
#RewriteRule .* - [L] ---- COMMENT THIS LINE************
# redirect to front controller
RewriteRule ^(.*)$ index.php?url=$1 [NC,QSA,L]