Error 1552 when Resizing Clusters Partition Magic 8.0

Using Partition Magic 8.0 I get Error 1552 Requested FRS Entry is Unused (free).  I am working with my secondary drive 400 GB which is a clone of my system drive. I have run Chkdsk /r ,  and also the Partition Magic "check drive for errors" program and they both come up clean. (before I try the resize). After the resize fails the drive is pretty much trashed and I have to re-clone it.  Does anyone know what an FRS is ??  and why its being unused is a problem.  Is there a fix ???

Is there another program that can resize clusters ??

 

Any help will be appreciated

Thanks

Mike