product_listing link to product page error

All suggestions appreciated,

I'm testing a Joomla 1.5.23 website offline using xampp for windows. I've insalled HikaShop and that was very straight forward. Ive used Zen Cart for many years so HikaShop looks very familiar. I created a menu item and tied it to products_listing in HikaShop, and associated it to the desired product category. The HikaShop content module used has sub element filters set to direct sub elements. The associated category is the same as the menu_item. Its product parameters ordering field is set to "ordering" and it content on product page is set to "same categories".

I had everything working properly and was about to take this site live when something went wrong with the product page and it only partially appears and is no longer properly formatted. The products_listing page is still working great. I must have gotten in a hurry and turned something off but for the life of me I can't seem to backtrack and figure it out.

The following image is the products_listing page:

The following image is the product page:



As you can see, I've lost most of that page. I'm only using the built in tools provided in HikaShop and have not hacked any code. Again, any help will be appreciated.

Thanks for the reminder to do step one, I was so frustrated I didn't think to do the obvious and turn on error checking. However, I took your advice and this is the error I received: PARSE ERROR SYNTEX ERROR UNEXPECTED T-ECHO: COMPONENTS/COM_HIKASOP/VIEWS/PRODUCTS/TMPL/SHOW_BLOCK_DIMENSIONS.PHP-on line 49.

I opened the file and saw the line beginning with "echo echo". I removed one "echo" and everything is working fine now.

Thank you Nicolas