Crystal Reports in asp.net stopped working

I have several CR reports set up using VS 2010 and CR 2010 for VS. They were working perfectly yesterday. Now all of them are giving me this error:

Unsupported Operation. A document processed by the JRC engine cannot be
opened in the C++ stack.

Description:
An unhandled exception occurred during the execution of the current web
request. Please review the stack trace for more information about the error and
where it originated in the code.

Exception Details:
System.Runtime.InteropServices.COMException: Unsupported Operation. A
document processed by the JRC engine cannot be opened in the C++ stack.

Line 48:     private void SetDBLogonForReport(ConnectionInfo connectionInfo)
Line 49:     {
Line 50:         TableLogOnInfos tableLogOnInfos = crystalReportViewer.LogOnInfo;
Line 51:         foreach (TableLogOnInfo tableLogOnInfo in tableLogOnInfos)
Line 52:         {

This is the code that I'm using that was working perfectly.

string reportPath = ("~/customreports/AP_TRANS_GL_POSTINGS2.rpt");
ConnectionInfo connectionInfo = new ConnectionInfo();
     connectionInfo.ServerName = "sdwinsql03v";
     connectionInfo.DatabaseName = "fin_prod";
     connectionInfo.UserID = "xxx";
     connectionInfo.Password = "xxx";
     crystalReportViewer.ReportSource = reportPath;
     SetDBLogonForReport(connectionInfo);
}

private void Page_Init(object sender, EventArgs e)
    {
        ConfigureCrystalReports();
    }

private void SetDBLogonForReport(ConnectionInfo connectionInfo)

    {
         TableLogOnInfos tableLogOnInfos = crystalReportViewer.LogOnInfo;
        foreach (TableLogOnInfo tableLogOnInfo in tableLogOnInfos)
       {
            tableLogOnInfo.ConnectionInfo = connectionInfo;
      }
}

What would cause them to quit working?