EDIT: First and foremost, you will not get any results back if there are no commissions to report.
I am working with these API's, I have no problem with any of the REST API's, the SOAP API for the daily publisher commission service does not appear to be working. The results from:
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:api="https://pubcommission.api.cj.com">
<soapenv:Header/>
<soapenv:Body>
<api:findPublisherCommissions>
<api:developerKey>*DEVKEY*</api:developerKey>
<api:date>01/19/2007</api:date>
<api:dateType>event</api:dateType>
<api:advertiserIds></api:advertiserIds>
<api:websiteIds>123456</api:websiteIds>
<api:actionStatus>all</api:actionStatus>
<api:actionTypes></api:actionTypes>
<api:adIds></api:adIds>
<api:countries></api:countries>
<api:correctionStatus></api:correctionStatus>
<api:sortBy>commissionAmount</api:sortBy>
<api:sortOrder>desc</api:sortOrder>
</api:findPublisherCommissions>
</soapenv:Body>
</soapenv:Envelope>
Which is completely valid and correct, gives me an HTML page back. Your error is probably related to parsing the page as XML.
The results are:
<html>
<head>
<title>Web Services</title>
</head>
<body vlink="#333333" alink="#FFCC33" bgcolor="#FFFFFF" leftmargin="0" marginwidth="0" topmargin="0" marginheight="0">
<table cellpadding="0" cellspacing="0" border="0" width="100%">
<tr>
<td background="images/header_bg.gif">
<a href="http://webservices.cj.com"><img src="images/header.gif" width="600" height="63" border="0" alt="webservices.cj.com" /></a>
</td>
</tr>
</table>
<h3>Latest WSDLs</h3>
<table width=70%><tr><td>
<ul>
<li>ProductSearchServiceV2.0<a href="wsdl/version2/productSearchServiceV2.wsdl">[wsdl]</a><img src="images/new11.gif" width="40" height="15"/></li>
<li>LinkSearchServiceV2.0<a href="wsdl/version2/linkSearchServiceV2.wsdl">[wsdl]</a><img src="images/new11.gif" width="40" height="15"/></</li>
<li>PublisherCommissionService and ItemDetails V2.0<a href="wsdl/version2/publisherCommissionServiceV2.wsdl">[wsdl]</a><img src="images/new11.gif" width="40" height="15"/></</li>
<li>RealTimeCommissionServiceV2.0<a href="wsdl/version2/realtimeCommissionServiceV2.wsdl">[wsdl]</a><img src="images/new11.gif" width="40" height="15"/></</li>
<li>AdvertiserSearchService<a href="wsdl/version2/advertiserSearchServiceV2.wsdl">[wsdl]</a></li>
<li>FieldTypesSupportService<a href="wsdl/version2/supportServiceV2.wsdl">[wsdl]</a></li>
</ul>
</td></tr></table>
<h3>Previously Released WSDLs</h3>
For previous versions of the wsdls <a href="old_versions.jsp">click here.</a><p>
<h3>Sign Up</h3>
<ul>
<li><a href="sign_up.cj">Sign Up</a></li>
</ul>
</body>
</html>
I have sent them an email, and expect a response today. I will confirm with you that this API is still available, it may have been completely replaced by the Real Time publisher commission API.