2 messages in com.googlegroups.google-talk-openRe: error code 501 in pcp example
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StepLg20 Dec 2006 12:15 
rsa24 Dec 2006 21:02 
Subject:Re: error code 501 in pcp example
From:rsa (r.sa@gmail.com)
Date:12/24/2006 09:02:17 PM
List:com.googlegroups.google-talk-open

PCP example will work only with peer PCP. This example is not compatible with Google Talk Client. So it looks like you are trying to transfer file to Google Talk Client.