There is a patch available for this and I have verified that it does work.
The following is in response to a TAC item that I had with Cisco recently
(you will of course need a CCO account):

Problem with nmpath. The resolution to that is as follows..

+++
  I have found information about this issue. It has been reported as a bug
of CiscoWorks, the bug id is CSCdj91490. The patch for this one can be
downloaded from
ftp://<userid>@www.cisco.com/cisco/netmgmt/ciscoworks/4.0/temp-smu/rtyzqk/,

the patch name is CSCdj91490.tar.Z. Please apply this patch to your system
to see if this will solve the problem. Please refer to README file for
instruction of installation.

+++



Carsten Strahler wrote:

> Hi,
>
> after migration from NV 4 to NV5 the Ciscoworks- Pathtool doesn't work.
> Is there a bugfix or a workaround available ?
>
> Carsten Strahler



--
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Scott Wilson                         Email: swilson AT rpm DOT com
Network Management Consultant        Pager: 800-506-7348
RPM Consulting, Inc.
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