<?xml version='1.0' encoding='UTF-8'?>
<methodResponse>
<fault>
<value>
<struct>
<member>
<name>faultString</name>
<value>
<string>Client error: Not allowed to create comment</string>
</value>
</member>
<member>
<name>faultCode</name>
<value>
<int>337</int>
</value>
</member>
</struct>
</value>
</fault>
</methodResponse>
I see this version of source code (http://repo.or.cz/w/livejournal.git/blob/HEAD:/cgi-bin/ljprotocol.pl#l560) I see that this error code returns if LJ::Comment->create failed but I don't understand why does it fail?
For my posts I can add comments without problem.