Possible bug found in kickstart (can anybody check this?)

I setup a vmware server with 2 disks (sda and sdb)

I have the following in the kickstart file:

## - - disk setup - - - - - - - - - -

## :: remove old partitions

clearpart --all --drives=sda --initlabel

#autopart

part /boot --fstype ext3 --size=100 -- --asprimary

part / --fstype ext3 --size=1024 --grow -- --asprimary

part swap --size=128 --grow --size=256 -- –asprimary

When I run the kickstart I see this:

Could not allocate requested partitions

Partioning failed: Could not allocate partitions as primary partitions.

What i bassicly want is that the installer only use sda.

Can anybody verify this?

Thanks,

Rolf