The screenshot for the error message is attached with this ticket. I've tried updating the dll version but to no avail.
RARajaveni Syncfusion Team January 19, 2015 12:34 PM UTC
We regret for the inconvenience caused.
The reported issue has occurred due to mismatching of DLL version in your sample. If you are using 18.104.22.168 and if the frame wok version is 4.0, then the DLL version should be 12.4400.0.24. Please check the ‘bin’ folder and refer the following table for DLL reference.
.Net Frame Work Version
Please follow the steps below:
1. Open the Syncfusion Essential Studio and click on Explore sample.
2. Click on samples and open web folder, you can get the bin folder inside.
3. Check the version of DLL inside the bin folder.
DLL version should match the framework version you have used. And also, please check the web.config file in your sample.
All the assemblies referred inside the web.config file should match your .NET framework version.