GnuCash installation -- problem with goffice version

[Paul Henegan]

An attempt to install GnuCash was interrupted by the following error  
message:

"
checking for libgoffice-0.4 >= 0.4.0... no
checking for libgoffice-0.3 >= 0.3.0... no
checking for libgoffice-1 >= 0.0.4... no
configure: error: Cannot find libgoffice.
"

I have verified that "goffice                        @0.5.0" is active.

What's the best way to proceed?

TIA,

paul

Mac OS X 10.4.10, MBP 3,1 (mid-June 2007 model), X-Code 2.4.1, X11  
1.1.3 - XFree86 4.4.0, MacPorts 1.520