Can't open some nodes

Hi On a page I’m building, I have a very strange error. Some nodes I can’t open anymore. It’s just hanging, but in the edit mode I’m getting all the data. OK:http://www.wpbaumanagement.ch/node/273 NOK:http://www.wpbaumanagement.ch/node/274 but edit is working:http://www.wpbaumanagement.ch/node/274/edit Can somebody help me finding the problem? In[…]