Other Help Topics :: error with libXrandr.so.2!!!!!

I can't install the libxrandr2 package with apt-get, it says that it can't overwrite the libXrandr.so.2 and with this problem I can't start Amule or Nicotine.
When I tried to run Nicotine, appeared this menssage:
Traceback (most recent call last):
File "/usr/bin/nicotine", line 143, in ?
result = checkenv()
File "/usr/bin/nicotine", line 69, in checkenv
import gtk
File "/usr/lib/python2.3/site-packages/gtk-2.0/gtk/.py",
line 43, in ?
from _gtk import *
ImportError: libXrandr.so.2: cannot open shared folder file, No such file or directory

What can I do???

original here.