In Windchill 10.1,Workflow Editor not Showing Robots in Editor Area

Hi All,

I am Using Windchill 10.1 with jre 7.0 Build 25.

when i open a workflow editor, i am not able to see the selected Robots in Editor area.

Normally when we create a new Workflow, it opens a Workflow editor with Start Robot.

we acn put the required Robots in to Editor area and some logic to them.

but in my case when i open a new workflow editor it opens but not showing start robot..if i try to put any robot in editor area it opens but it is not visible.

same if i try to view existing OOTB worklfows in editoe it gives me Blank editor and if i click randomley in area then the robots are opens in Pop ups but they are not visible .

i check the java versions. it is as per PTC's Recommadations.

here are two fig which howing the differeance.

This is the Actaual WF editor which normaly opens.

This is the WF Editor on My system without Start Flag.

Please suggest the solution.

Thanks,

Vivek