Getting Error after PLSQL Developer 11 Upgrade from v10

[Hariram Mani]

Control 'dxDockToDoPanel' has no parent window.

I just upgraded my PLSQL Developer Version from 10 to 11 and I am getting the above error.

I searched in the forum and found this link:https://forums.allroundautomations.com/ubb/ubbthreads.php?ubb=showflat&Number=39882

I deleted the Docking3 and Docking4 keys which were there in my registry, but I am still getting the error.

Can someone help me.

 

[Hariram Mani]

Actually i fixed it myself. Went to Tools, Preferences, Appearance.

Clicked on Reset Docking and Reset toolbars button to reset to default configurataion. the error went away.