[ALUG] Ubuntu 7.04 apt-get error when installing packages

[sagr]

Hi Folks,

I installed Ubuntu 7.04 on a PC a few minutes ago and would like to
install the package "gramps" on it.  Unfortunately however apt-get keeps
crashing out with the following error:

ian at flower:~$ sudo apt-get install gramps
Password:
Reading package lists... Done
Building dependency tree        
Reading state information... Done
Recommended packages:
  graphviz python-reportlab
The following NEW packages will be installed
  gramps
0 upgraded, 1 newly installed, 0 to remove and 103 not upgraded.
Need to get 0B/13.4MB of archives.
After unpacking 27.2MB of additional disk space will be used.
(Reading database ... dpkg: error
processing /var/cache/apt/archives/gramps_2.2.6-1ubuntu1_all.deb
(--unpack):
 files list file for package `xcalc' is missing final newline
Errors were encountered while processing:
 /var/cache/apt/archives/gramps_2.2.6-1ubuntu1_all.deb
Processing was halted because there were too many errors.
E: Sub-process /usr/bin/dpkg returned an error code (1)
ian at flower:~$ 

It looks to me like the problem is:
"files list file for package `xcalc' is missing final newline"
so where do I find the files list file for package `xcalc' so I can add
a newline to it?

Best wishes,
sagr.