If there is a pageMode option, An error event is fired at initialization, even if no error occurred.
The problem can be reproduced with the HTML5 demo:
$("#reportViewer1")
.telerik_ReportViewer({
serviceUrl: "api/reports",
reportSource: {
report: "Telerik.Reporting.Examples.CSharp.ReportCatalog, CSharp.ReportLibrary",
parameters: {}
},
viewMode: telerikReportViewer.ViewModes.INTERACTIVE,
pageMode: telerikReportViewer.PageModes.SINGLE_PAGE,
scaleMode: telerikReportViewer.ScaleModes.SPECIFIC,
scale: 1.0,
enableAccessibility: false,
sendEmail: { enabled: true },
ready: function () { debugger; },
error: function (e, args) { debugger; }
});