[PD] pdp not loading in Pd-0.38-extended-RC7

When I start Pd, I get:

/Applications/Pd-0.38.4-extended-RC7.app/Contents/Resources/ Scripts/../extra/pdp.pd_darwin: dlopen(/Applications/Pd-0.38.4- extended-RC7.app/Contents/Resources/Scripts/../extra/pdp.pd_darwin,
10): Symbol not found: _gluOrtho2D Referenced from: /Applications/Pd-0.38.4-extended-RC7.app/Contents/ Resources/Scripts/../extra/pdp.pd_darwin Expected in: /usr/X11R6/lib/libGL.1.dylib

pdp: can't load library

When Pd loads, PDP is not working. Is it a known bug or am I missing something?

I have Mac OS X 10.4.5 and Pd-0.38-extended-RC7 (i'm not using the stable 0.38-extended build since pix_video camera dialog crashes in it, while it works fine in RC7).

Thanks in advance for any help Vasily Kuznetsov