Combining Static Loads with Moving Loads

Hi All,

I am having some major issues with combining my static loads with a load generation for vehicle movement across a structure. The attached structure is for a wharf and I need to apply the static loads, self weight (LC1), and mooring (LC210) with the generated load (LC213-232) for the rail crane running along the length.

As there is more than 1 static load required I have used a combination load to combine the two into LC11.  I have then used LC11 as the 'predefined load case' or repeat load.

StaadPro doesn't like this and gives me a error message reading "Error in analysis, Check Output (.ANL) File"

Any help would be greatly appreciated.

Regards,