Hi Omar,
Please download the samplebrowser.exe from the below link.
http://www.syncfusion.com/Support/user/uploads/SampleBrowser_3b1a8cec.zipReplace the downloaded samplebrowser.exe in the following location.
[Installed Drive]:\Program Files\Syncfusion\Essential Studio\5.1.1.47\Infrastructure\SampleBrowser\2.0
Now run the samplebrowser from the dashboard.
Please let me know if this solves your issue.
Thanks,
Ramu