Hi Chintan,
Thanks for using our Syncfusion Products.
If you are migrating from the Essential Studio 4.4.0.51 to the
6.1.0.34. Could you please view this KB article ?
http://www.syncfusion.com/support/kb/2137/Upgrading-projects-to-a-new-Syncfusion-versionIf you need a Key for the V6.1 you can generate the Key from your Direct Trac account.
Please let me know if you have any queries.
Regards,
VelusamyS