I upgraded my Telerik reporting version to the latest version.
I view reports using the Properties dialogue of a ReportViewer . all worked fine.
but after some reports, suddenly I get this error:
Invalid report type Exception has been thrown by the target of an invocation.
and I do not can see any reports. (all the reports , others too).
Yesterday I get this error all time. Today the reports worked fine' and suddenly I get this error again.
Can anyone shed any light as to the possible reasons why this might be happening?