Failing excercise-fluidsystem

The excercise-fluidsystem_solution a and b tests are failing with the message:

ParameterException [init:/home/rwinter/DUMUX/dumux/dumux/io/grid/gridmanager_yasp.hh:107]: Please supply one of the parameters Grid.UpperRight , or a grid file in Grid.File

I didn't change something there and the UpperRight is defined in all params.input as:

[Grid]
UpperRight = 60 60 # x-/y-coordinates of the upper-right corner of the grid [m]