Reporting services giving a 500 internal server error?

The report is uploaded and everything seems to be correct,
however i keep getting a 500 internal server error without any explanations of the problem. What can see problem be? I'm using the correct credentials.
thanks!
here is my code:


reports.aspx:
<rsweb:ReportViewer ID='ReportViewer1' runat='server' Font-Names='Verdana'
Font-Size='8pt' Height='400px' Width='400px' ProcessingMode='Remote' >
<ServerReport ReportServerUrl='https://rs2k501.discountasp.net/ReportServer' ReportPath='/dustinrosen/reports/report3' DisplayName='MyReport' />
</rsweb:ReportViewer>


reports.aspx.cs:

protected void Page_Init(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{

DataSourceCredentials cred = new DataSourceCredentials();
cred.Name = 'booksConnectionString';
cred.UserId = 'rs_******';
cred.Password = '34********';


ReportViewer1.ServerReport.SetDataSourceCredentials(new DataSourceCredentials[] { cred });
ReportViewer1.ServerReport.Refresh();
......


report3.rdlc:


<Report xmlns='http://schemas.microsoft.com/sqlserver/reporting/2005/01/reportdefinition' xmlns:rd='http://schemas.microsoft.com/SQLServer/reporting/reportdesigner'>
<DataSources>
<DataSource Name='booksConnectionString'>
<rdataSourceID>ec8db75f-da62-4050-9787-f28c1a48f5c8</rdataSourceID>
<ConnectionProperties>
<DataProvider>SQL</DataProvider>
<ConnectString>
</ConnectString>
</ConnectionProperties>
</DataSource>
</DataSources>
<rd:ReportID>aa0f6392-a934-473b-be73-f3979d9b69e0</rd:ReportID>
<Width>5in</Width>

<Height>2.45in</Height>
<ColumnSpacing>0.5in</ColumnSpacing>
<ReportItems>
<Textbox Name='textbox1'>
<Style>
.....

 

i tried to disable the friendly error but it just shows an empty screen anyway.
Is there any log file anywhere?

 

http://www.dustinrosenberg.com

 

http://www.dustinrosenberg.com/reports.aspx