Your "A" system has a symlink from /usr/lib/libevent-1.4.so.2
to /usr/local/lib/libevent-1.4.so.2
but system "B" does not. Chances are, if you create it then everything will start working.
The command should be as follows.
sudo ln -s /usr/local/lib/libevent-1.4.so.2 /usr/lib/libevent-1.4.so.2
As an alternative, you can add /usr/local/lib
to your library path as a test by exporting LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib
as a temporary fix on system "B".