VM Conflicting with Chronoforms and Fox Contact

[chinsen]

Hi everyone!

I'm having a problem similar to that posted here

http://forum.virtuemart.net/index.php?topic=102587.0

but not exactly the same, and that solution doesn't work.

When I try to load my contact page, which is a chronoforms page, I get the following error -

Fatal error: require() [function.require]: Failed opening required 'JPATH_VM_ADMINISTRATOR/helpers/vmmodel.php' (include_path='/home/gfrptyfz/public_html/casl/plugins/system/shlib/shl_packages//ZendFramework-1.11.7-minimal/library:.:/usr/local/php53/pear') in /home/gfrptyfz/public_html/casl/administrator/components/com_virtuemart/models/product.php on line 24

You can see it yourself here - http://www.chinthaka.info/casl/index.php/contact-us

I'm using -
Joomla! 2.5.24
VirtueMart 2.6.2
Chronoforms v5 (latest)

Would greatly appreciate any help! Thanks!