Hi Pawal,
Thank you for your interest in Syncfusion products.
I would request you to please check the following steps in your end.
1) Application framework version and the reference dlls both are same version.
2) Please check our dll's contain inside of the GAC.
If this issue exist please update with screen shot.
Let me know if you have any further concerns.
Regards,
Ragamathullah B.
