Openapp error

[Guevara, Kristine F]

I have the following core:
-gnustep-make-1.3.2
-gnustep-base-1.3.2
-gnustep-gui-0.7.7
-gnustep-back-0.7.7
-gnustep-examples-0.9.5

After sourcing /GNUtools/2.6/System/Makefiles/GNUstep.csh, I tried to run
the Calculator with openapp Calculator.app but it returns with an error: 

/GNUtools/2.6/System/Tools/openapp: test: argument expected


Doing an openapp --help, it returns with:

usage: openapp application [--library-combo=...] [arguments...]
application is the complete or relative name of the application
program with the .app extension, like Ink.app.
[arguments...] are the arguments to the application.