Few issues with prestashop 1.5.4.0 & theme

Hi, I am create a new prestashop website [login to view URL] I have created this theme before as well on older version & it was working perfect. But on this newer version of prestashop I m getting these following issues. 1. In this theme they have used TM Categories module which is placed well & in coding its showing that block as well but it is not showing categories in this block only showing blank tag. 2. Product images are not showing. I have uploaded products images in BO & it was showing & opening images BO but on frontend its showing broken image link we are getting 2 different link in BO & Frontend Urls mentioned below: Frontend: [login to view URL] BO: [login to view URL] 3. When I m uploading images in BO for any module like "TM Nivo Slider" or "TM Slider #1" after 100% done it show '[PrestaShop] Fatal error in module tmnivoslider: Call to undefined function checkImage()" "Internal Server Error" Thanks,