Remove Setting of Perspective from DTP
This issue is a quick fix for issue #276 (closed). The long term solution is proposed in issue #286 (closed).
Remove the following call of the DTP:
org.eclipse.ui.IWorkbench workbench = org.eclipse.ui.PlatformUI.getWorkbench();
workbench.showPerspective(info.scce.cinco.product.flowgraph.perspective.FlowGraphToolPerspective.ID_PERSPECTIVE, workbench.getActiveWorkbenchWindow());