hi experts

I am trying to enable all the ports of my mxl switch, but I ran into this error when I am doing the 40G ports:

FTOS(conf)#interface range fortyGigE 0/33 , fortyGigE 0/37
             ^
% Error: In configuration at "^" marker.

The error marker places it directly below the word (conf) which is really weird. Has anyone seen this before?

Here is the cmd copied from the instructions, I have underlined the command I am trying to run:

Option 2: You can enable all ports at once.
FTOS#configure
FTOS(conf)#interface range tengigabitethernet 0/1 – 32 , tengigabitethernet 0/41 - 56
FTOS(conf-if-range-te-0/1-32,te-0/41-56)#switchport
FTOS(conf-if-range-te-0/1-32,te-0/41-56)#no shutdown
FTOS(conf-if-range-te-0/1-32,te-0/41-56)#exit
FTOS(conf)#interface range fortyGigE 0/33 , fortyGigE 0/37
FTOS(conf-if-range-fo-0/33,fo-0/37)#switchport
FTOS(conf-if-range-fo-0/33,fo-0/37)#no shutdown
FTOS(conf)#exit

Thanks

EDIT:

a quick investigation shows port 33 as 10G

!
interface TenGigabitEthernet 0/33
no ip address
flowcontrol rx on tx off
shutdown
!

and no configuration for port 37 at all. So I guess now the real question is how to change 0/33 into a 40G port instead of the current 10 Gig port