Comment 2 for bug 1294927

StacktraceTop:
 Tk_CreateWindowFromPath (interp=0x2e6d190, tkwin=0x0, pathName=0x324d080 ".139727136312496.139727136313144.139727136387440", screenName=0x0) at /build/buildd/tk8.5-8.5.15/unix/../generic/tkWindow.c:1181
 vtkTkRenderWidget_Cmd (clientData=<optimized out>, interp=0x2e6d190, argc=8, argv=0x2eb62c0) at /build/buildd/vtk-5.8.0/Rendering/vtkTkRenderWidget.cxx:539
 TclInvokeStringCommand (clientData=0x33a72f0, interp=0x2e6d190, objc=8, objv=0x7fffbb1559e0) at /build/buildd/tcl8.5-8.5.15/unix/../generic/tclBasic.c:2172
 TclNRRunCallbacks (interp=0x2e6d190, result=0, rootPtr=0x0) at /build/buildd/tcl8.6-8.6.1/generic/tclBasic.c:4368
 Tcl_EvalObjv (interp=<optimized out>, objc=<optimized out>, objv=objv@entry=0x7fffbb1559e0, flags=flags@entry=393216) at /build/buildd/tcl8.6-8.6.1/generic/tclBasic.c:4099