How Do I fix pages that are like this

[valerie6128]

On my website since last week under some categories when you click on them this is what shows up at the in the adress bar and the page is just white? how do I fix this,

if you go to my website www.laboutiquedelingerie.com and on the right hand side for example click on bras than on underwire bras and this is what you will see, it seems to be the first 3 listings, the rest are ok.

http://www.laboutiquedelingerie.com/...dex&cPath=1_81

[kobra]

Strange....As this uses the same display as others - -
I guess that I would start with the products that are supposed to display and dis-able one by one