[libredwg] Shared library error

[gagan]

When I compiled and installed libredwg for the first time, It was
working fine. I had to re-install my OS. Again when I tried to run
compile libredwg and import python module, It gives an error as :-

Type "help", "copyright", "credits" or "license" for more information.
>>> import libredwg
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.7/dist-packages/libredwg.py", line 26,
in <module>
    _libredwg = swig_import_helper()
  File "/usr/local/lib/python2.7/dist-packages/libredwg.py", line 22,
in swig_import_helper
    _mod = imp.load_module('_libredwg', fp, pathname, description)
ImportError: libredwg.so.0: cannot open shared object file: No such
file or directory

Any Ideas why ?
and when I try to compile any of the examples, again while running I
get the same error.
Please help.

-- 
Thanks
Gaganjyot