Sometime when we are trying out new things on the shop all of a sudden the testpage just stops working and refers to an error with the permanent links block.
Up until now I have not been able to understand why. If we look at the page source it is referring to a cms-link that is missing pointing to the smarty cache.
Up until today the only solution has been to restore the last update of the shop. Today however I tried to turn off profiling and then the shop was working again. When turning profiling on again the page still loads ok so it seems are dosing a profiling restart might solve the problem. Keeping this post as a mental note in case it happens again.