That sounds like a new one, any chance you could post the error?
..
I got the same error, which follows below:
python2.5 bmc.py buy 1 DISHWARA 100000000
Enter passphrase:
Server error: t;=>"odxVuEbb620mu9IdNkOp+GD5pVSZIx2DB0rL73wkCwqEsFLWuSU0QyP2aGQferUL5g2oWarG2mnfdhpywI2FL4v8n1oakC4+5eP9cxTx3VVNVhFmi4pZgUVFv3Witup10AP4n1yXx1nHo+NwRwaNSrF0bwfLw3RatwrmDW56hzRE8Dv3o/wsXRBaQ0uVLO4/vm5r1lFyvofHRShLr2xUdMihBnXQe77DqlgPvnWAI45Rbspqn38SjnVxLukbYb8GGDAtc5OTDHKazzbQUDxCkoIE64nnl9T7G7gbdARQqlGvfmAKiup5zTcLRZASotQNksXdJ0buV9OVJHxmN/gX2w=="}</div></td>
</tr>
<tr>
<td>rack.request.query_string</td>
<td class="code"><div></div></td>
</tr>
<tr>
<td>rack.run_once</td>
<td class="code"><div>false</div></td>
</tr>
<tr>
<td>rack.url_scheme</td>
<td class="code"><div>http</div></td>
</tr>
<tr>
<td>rack.version</td>
<td class="code"><div>[1, 0]</div></td>
</tr>
<tr>
<td>sinatra.error</td>
<td class="code"><div>#<Twitter::Unauthorized: POST
https://api.twitter.com/1/statuses/update.json: 401: Timestamp out of bounds></div></td>
</tr>
</table>
<div class="clear"></div>
</div> <!--RACK ENV -->
<p id="explanation">You're seeing this error because you have
enabled the <code>show_exceptions</code> setting.</p>
</div> <!--WRAP -->
</body>
</html>