Links not working

 

 

 

 

 

 

 

 

I have renamed the the origional htaccess file to htaccess.txt and am using the htacess file that comes with dolphin but the links aren't doing what they are supposed to do.  For example if you click on video it opens a non existent folder called video not the file it should be opening.  Any ideas what is wrong here?  They do appear to be correct in admin menu builder area.  I'm using 6.1.4

Many thanks in advance.