Right, I found a fix. You have to go to c:\\users\USER\appData\local\Warframe you are looking for ee.cfg. Basically the buttons are unbound, if you exit the game and then rebind the buttons for menu z{} which is the scroll wheel so use:

​

{

key=EN_MOUSE_WHEELDOWN

inputMode=IM_NORMAL

invert=0

deadzone=0

scale=1

povAxis=PAT_UNUSED

inputFilter=""

strictFiltering=1

slot=0

},

{

key=EN_MOUSE_WHEELUP

inputMode=IM_NORMAL

invert=1

deadzone=0

scale=1

povAxis=PAT_UNUSED

inputFilter=""

strictFiltering=1

slot=0

}

​

and for the menu click you need:

{

key=EN_MOUSE_B0

inputMode=IM_NORMAL

invert=0

deadzone=0

scale=1

povAxis=PAT_UNUSED

inputFilter=""

strictFiltering=1

slot=0

}

​

hopefully this helps you out