Bug 3062: CEvalutionTree::clearNodes() did not reset the mpRootNode.
Bug 3062: CEvalutionTree::clearNodes() did not reset the mpRootNode.
copasi/COPASI,copasi/COPASI,copasi/COPASI,copasi/COPASI,copasi/COPASI,copasi/COPASI,copasi/COPASI,copasi/COPASI,copasi/COPASI