The copy of StrongED that you've downloaded only has the BaseMode mode
present, all other modes have to be downloaded from the Modes database
on the website.

You can choose to download the individual modes you need or you can
download packages of related modes. each mode/package is wrapped as in
a pseudo !StrongED application that can be dropped over the directory
holding StrongED.

If StrongED is already running when you install the new mode(s) then
click Menu over its iconbar icon and select 'Rescan modes'. StrongED
will then rescan its Modes directory picking up any newly added modes. 