A colleague and I are experiencing the same issue with separate reports where upon adding in some parameters, query string, etc. and clicking the 'Preview' button on a relatively simple report, the application is unresponsive. It will remain in a "Not Responding" state for quite some time before crashing. This is occuring on separate PC's and separate reports.
VSVinoth Srinivasan Syncfusion Team July 20, 2017 01:09 PM UTC
Thanks for your interest in Syncfusion components.
We have created a simple report with report parameters, query string in our report designer and we able to preview the report without any exception at our end. The report can be downloaded from the following location.