[pyclewn] Noob : mac-Vim pyclewn fails to start

[Rajesh K. <raj...@gm...>]

I am getting an error when I attempt to start pyclewn in macvim
any suggestions. Following is what i tried in vim.

:Pyclewn
Starting pyclewn.
Running nbstart, <C-C> to interrupt.
...................
The 'Pyclewn' command has been aborted.
Error: pyclewn failed to start.
To get the cause of the problem set the global variable 'pyclewn_terminal'
to:
:let g:pyclewn_terminal = "xterm, -e"
Press the <Enter> key to continue.