ttf-mathematica: neither installed nor removed

[H.S.Rai]

I tried to install ttf-mathematica.  But I guess there is some issue
with this package.

Now whenever I upgrade or install, apt-get run in to problem and give
message that ttf-mathematica is not installed properly.

On update it give message:

> 1 not fully installed or removed

and then:

> checking MathFonts_TrueType_41.exe
> Downloaded file looks corrupted!
> dpkg: error processing ttf-mathematica4.1 (--configure):
> subprocess post-installation script returned error exit status 1
> Errors were encountered while processing:
> ttf-mathematica4.1
> E: Sub-process /usr/bin/dpkg returned an error code (1)

If I want to remove it, again it give following message:

> E: ttf-mathematica4.1: subprocess pre-removal script returned error exit status 1

Now I want it should remove partial installed  ttf-mathematica and
should not try to install on next run of apt-get. What should I do?

-- 
H.S.Rai