Package error installing debtags

[rob stone]

Whilst updating (via synaptic) it fails to complete the installation of
debtags. If needed I could take a screen shot of the error listing but
the following is logged in /var/log/messages:-

Aug  8 03:14:54 roblaptop synaptic.desktop[14611]: Traceback (most
recent call last):
Aug  8 03:14:54 roblaptop synaptic.desktop[14611]: File
"/usr/bin/debtags", line 699, in <module>
Aug  8 03:14:54 roblaptop synaptic.desktop[14611]: main()
Aug  8 03:14:54 roblaptop synaptic.desktop[14611]: File
"/usr/bin/debtags", line 693, in main
Aug  8 03:14:54 roblaptop synaptic.desktop[14611]:
sys.exit(action.main(args))
Aug  8 03:14:54 roblaptop synaptic.desktop[14611]: File
"/usr/bin/debtags", line 637, in main
Aug  8 03:14:54 roblaptop synaptic.desktop[14611]: for pkg, tags in
self.tags_from_apt():
Aug  8 03:14:54 roblaptop synaptic.desktop[14611]: File
"/usr/bin/debtags", line 260, in tags_from_apt
Aug  8 03:14:54 roblaptop synaptic.desktop[14611]: tags =
tags_from_apt_record(cand.record)
Aug  8 03:14:54 roblaptop synaptic.desktop[14611]: File
"/usr/lib/python3/dist-packages/apt/package.py", line 452, in record
Aug  8 03:14:54 roblaptop synaptic.desktop[14611]: return
Record(self._records.record)
Aug  8 03:14:54 roblaptop synaptic.desktop[14611]: UnicodeDecodeError:
'utf-8' codec can't decode byte 0xe3 in position 349: invalid
continuation byte
Aug  8 03:15:28 roblaptop synaptic.desktop[14611]: (synaptic:14612):
GLib-GObject-WARNING **: The property GtkAlignment:xscale is deprecated
and shouldn't be used anymore. It will be removed in a future version.


The version of debtags is 2.0+nmu1.

uname -a
Linux roblaptop 4.0.0-2-amd64 #1 SMP Debian 4.0.8-2 (2015-07-22) x86_64
GNU/Linux

Any ideas?

Rob