Error in catalogue install

I have installed the catalogue from the wiki how to section of modx, as shown below on my web site page

http://www.barrow-homes.com/index.php?id=16

however i keep getting the folowing error:

"&tpl either does not contain any placeholders or is an invalid chunk name, code block, or filename. Please check it".

any ideas on why this is happening?

Would be much appreciated! Thanks Adam

The chunk name you specified in the &tpl parameter in the snippet call does not EXACTLY match the chunk’s name.

Make sure you use backticks `` instead of quote marks ’’ around the parameter values (&tpl=`chunkName`).

You did create the chunk template, I presume.

I have made a few changes as suggested and i seem to be getting the folowing error.

When i navigate to the correct page to add an item to the catalogue

http://www.barrow-homes.com/index.php?id=16

I get the following error

Add a product : Document or chunk not found for template id= ’fdmEformProduct’

I have created the chunk and it is named correctly, any ideas?