package portmap 6.0.0-1ubuntu2 failed to install/upgrade: exception during do-release-upgrade for system from 9.10 -> 10.04

[Spike Grobstein]

Binary package hint: portmap

Errors were encountered while processing:
 portmap
 nfs-common
Exception during pm.DoInstall(): E:Sub-process /usr/bin/dpkg returned an error code (1)

*** The package "portmap" failed to install or upgrade.

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This machine has been updated from 8.04 -> 9.04 -> 9.10 so far in the last 2 days.

ProblemType: Package
DistroRelease: Ubuntu 10.04
Package: portmap 6.0.0-1ubuntu2
ProcVersionSignature: Ubuntu 2.6.31-22.63-generic-pae
Uname: Linux 2.6.31-22-generic-pae i686
Architecture: i386
Date: Thu Sep 9 14:50:39 2010
ErrorMessage:
 ErrorMessage: subprocess installed post-installation script returned error exit status 1
SourcePackage: portmap
Title: package portmap 6.0.0-1ubuntu2 failed to install/upgrade: