I get a 500 Error in all categories and product pages suddenly, heeeelllppp

[freshfranky]

Hy

Since today, I was trying to add cononical links. Now I made all as it was befor but see here, I get a 500 error for all categories and Products.

http://www.gpsvision.ch/de/virtuemart/tier-ortung/tk201-detail

It tells me to check the view.html.php and its correct, there is no such class but i was never there. There is only the following class:
class VirtuemartViewCategories extends VmView

Why i get this error and how can i solve this issue?

[freshfranky]

Just put the backup.