cubase 4 le, Can not add more then 16 input busses?

I just installed cubase 4 le with my Alesis multimix 16 and I am having a problem adding all my VST inputs. Cubase will only let me set 16 mono VST inputs or 1x stereo and 14 mono inputs MAX. Is there a 16 bus limit in cubase? I was using the multimix 16 with nuendo and was able to set up all 18 inputs, 1 stereo with 16 mono VST inputs, with no problem.

Win 7 64bit
Quadcore 2.66 intel
4gb Ram
Alesis Multimix 16

From the LE4 manual …