env:morphossdk contains:

Development/

There isnt a "Development" directory on my main MorphOS drive or on my secondary drive.

Startup-sequence contains the following references to the SDK:

if not exists ENV:MorphOSSDK NOREQ
if exists SYS:Development NOREQ
SetEnv MorphOSSDK SYS:Development
endif
endif
if exists ENV:MorphOSSDK NOREQ
Assign SDK: "$MorphOSSDK"
if exists SDK:Startup NOREQ
Execute >NIL: SDK:Startup
endif
endif


Fatboy:MorphOS/S> cd sys:development
directory not found
Fatboy:MorphOS/S>