Question about Yum dependency on x64

[David.Estacio at sycoleman.com]

I am running FC4 Test 3 on my x64 laptop.  When I run yum update it gets
to the point where it says

--> Running transaction check

Then I get the following

--> Processing Dependency: libhz.so.0()(64bit) for package: autoconvert
--> Finished Dependency Resolution
Error: Missing Dependency: libhz.so.0()(64bit) is needed by package
autoconvert

Any help with this?
Thanks
David