java.lang.NullPointerException
   at org.netbeans.modules.db.explorer.node.ColumnNode$1.run(ColumnNode.java:153)
   at org.netbeans.modules.db.explorer.node.ColumnNode$1.run(ColumnNode.java:134)
   at org.netbeans.modules.db.metadata.model.JDBCConnMetadataModel.runReadAction(JDBCConnMetadataModel.java:97)
   at org.netbeans.modules.db.metadata.model.api.MetadataModel.runReadAction(MetadataModel.java:92)
   at org.netbeans.modules.db.explorer.node.ColumnNode.setupNames(ColumnNode.java:133)
   at org.netbeans.modules.db.explorer.node.ColumnNode.initialize(ColumnNode.java:125)
   at org.netbeans.api.db.explorer.node.BaseNode.setup(BaseNode.java:206)
   at org.netbeans.modules.db.explorer.node.ColumnNode.create(ColumnNode.java:98)
   at org.netbeans.modules.db.explorer.node.ColumnNodeProvider$1.run(ColumnNodeProvider.java:128)
   at org.netbeans.modules.db.explorer.node.ColumnNodeProvider$1.run(ColumnNodeProvider.java:101)
   at org.netbeans.modules.db.metadata.model.JDBCConnMetadataModel.runReadAction(JDBCConnMetadataModel.java:97)
   at org.netbeans.modules.db.metadata.model.api.MetadataModel.runReadAction(MetadataModel.java:92)
   at org.netbeans.modules.db.explorer.node.ColumnNodeProvider.initialize(ColumnNodeProvider.java:100)
   at org.netbeans.api.db.explorer.node.NodeProvider.getNodes(NodeProvider.java:106)
   at org.netbeans.modules.db.explorer.node.NodeRegistry.getNodes(NodeRegistry.java:167)
   at org.netbeans.api.db.explorer.node.ChildNodeFactory.createKeys(ChildNodeFactory.java:107)
   at org.openide.nodes.AsynchChildren.run(AsynchChildren.java:189)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.NullPointerException
   at org.openide.util.RequestProcessor$Task.schedule(RequestProcessor.java:1459)
   at org.openide.nodes.AsynchChildren.refresh(AsynchChildren.java:134)
   at org.openide.nodes.ChildFactory.refresh(ChildFactory.java:163)
   at org.netbeans.api.db.explorer.node.ChildNodeFactory.refresh(ChildNodeFactory.java:77)
   at org.netbeans.api.db.explorer.node.BaseNode.update(BaseNode.java:254)
   at org.netbeans.api.db.explorer.node.BaseNode.refresh(BaseNode.java:181)
   at org.netbeans.api.db.explorer.node.NodeProvider.refresh(NodeProvider.java:136)
   at org.netbeans.modules.db.explorer.node.NodeRegistry.refresh(NodeRegistry.java:147)
   at org.netbeans.api.db.explorer.node.BaseNode.refresh(BaseNode.java:180)
   at org.netbeans.api.db.explorer.node.NodeProvider.refresh(NodeProvider.java:136)
   at org.netbeans.modules.db.explorer.node.NodeRegistry.refresh(NodeRegistry.java:147)
   at org.netbeans.api.db.explorer.node.BaseNode.refresh(BaseNode.java:180)
   at org.netbeans.api.db.explorer.node.NodeProvider.refresh(NodeProvider.java:136)
   at org.netbeans.modules.db.explorer.node.NodeRegistry.refresh(NodeRegistry.java:147)
   at org.netbeans.api.db.explorer.node.BaseNode.refresh(BaseNode.java:180)
   at org.netbeans.api.db.explorer.node.NodeProvider.refresh(NodeProvider.java:136)
   at org.netbeans.modules.db.explorer.node.NodeRegistry.refresh(NodeRegistry.java:147)
   at org.netbeans.api.db.explorer.node.BaseNode.refresh(BaseNode.java:180)
   at org.netbeans.modules.db.explorer.DatabaseConnection$3.run(DatabaseConnection.java:1079)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1960)