Ultimate SEO URLS in Oscommerce shop (slight conflict resolution problem)

I have recently tried to update [login to view URL] so that it has the contribution "Ultimate SEO URLS" [login to view URL],2823 installed. It is an OScommerce shop , which has been modified. The project is to fully implement the above contribution. It is installed but seems to be conflicting in some pages with the previous search enginge friendly contrib, done by the previous web master, who has left and not told us which contrib it was. The Ultimage seo contrib is working to some degree, please visit [login to view URL] to test PLEASE NOTE!! I have not installed this contrib on the HTTPS site, and the website always tries to take you to the HTTPS, so be aware of this when testing.