Starting on r8701 it seems that Shareaza debug builds are requiring bzlib and regexp external DLL, it is documented in the revision log fine.
The problem is that available binaries, does not include this libraries nor in the 32 nor in the 64 bit archives.
I can find the snapshot 32 bit installers on sourceforge, that contain the 32 bit DLL, but I need the 64 bit ones.
I am aware that currently you consider 64 bit port not so stable, and understand not releasing officially it, but would be nice giving 64 bit users the oportunity to test newer builds.