strange issue with link

[bnhsbnhs]

Hello Milbo,

Can you please advice on my issue ??

I have very strange issue with following link, its showing blank page after click on "Product Details", its was working fine some days before.

Please help to solve this issue. Even same things are working fine on different server.

Actual Link: http://bnhs.org/bnhs/index.php?option=com_virtuemart&view=category&virtuemart_category_id=14&categorylayout=0&Itemid=532

Problem Link: http://bnhs.org/bnhs/index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=135&virtuemart_category_id=14&Itemid=532

PHP Version  5.4.39
VirtueMart  2.6.6
Joomla  2.5.20


Regards
Khalid