Thanks Mishra, it worked. I started facing issue suddenly on installing Studio 2.1.11.When I tried opening SAP HANA Studio, loading goes on well and stops responding when loading com.sap.ndb.studio.modeler.onesearch. I just deleted files in .eclipse & hdbstudio folders, Studio opened successfully.
Digging old thread and replying as this might be helpful to others.
Regards,
Chandra.