java.lang.NullPointerException

        at \\...\\ .\\हिñçêČάй語简??한\\.rᡇꋺꑿ⣲.equals(Unknown Source)

        at javax.swing.tree.TreePath.equals(TreePath.java:195)

        at javax.swing.tree.TreePath.isDescendant(TreePath.java:245)

        at javax.swing.JTree.getDescendantSelectedPaths(JTree.java:3536)

        at javax.swing.JTree.removeDescendantSelectedPaths(JTree.java:3513)

        at javax.swing.JTree.removeDescendantSelectedPaths(JTree.java:3566)

        at javax.swing.JTree$TreeModelHandler.treeNodesRemoved(JTree.java:3650)

        at javax.swing.tree.DefaultTreeModel.fireTreeNodesRemoved(DefaultTreeModel.java:530)

        at com.common.ui.tree.Wꐤꆜ͇᠋ float protected.b(Unknown Source)

        at com.common.ui.tree.Qꑩꆭ⣞ꃆ.gv(Unknown Source)

        at com.common.ui.tree.Qꑩꆭ⣞ꃆ.removeElement(Unknown Source)

        at com.common.ui.tree.w⣮ꏹꃀꆗ implements.remove(Unknown Source)

        at \\...\\ .\\हिñçêČάй語简??한\\.Jꋞ⠑⢤ꏐ new.a(Unknown Source)

        at \\...\\ .\\हिñçêČάй語简??한\\.qᛠ⠋⡫ꂮ.a(Unknown Source)

        at com.aquafold.datastudio.mainframe.ActionHandler.actionPerformed(Unknown Source)

        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028)

        at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2351)

        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)

        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)

        at javax.swing.AbstractButton.doClick(AbstractButton.java:389)

        at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:809)

        at com.apple.laf.AquaMenuItemUI.doClick(AquaMenuItemUI.java:137)

        at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:850)

        at java.awt.Component.processMouseEvent(Component.java:6382)

        at javax.swing.JComponent.processMouseEvent(JComponent.java:3275)

        at java.awt.Component.processEvent(Component.java:6147)

        at java.awt.Container.processEvent(Container.java:2083)

        at java.awt.Component.dispatchEventImpl(Component.java:4744)

        at java.awt.Container.dispatchEventImpl(Container.java:2141)

        at java.awt.Component.dispatchEvent(Component.java:4572)

        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4619)

        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4280)

        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4210)

        at java.awt.Container.dispatchEventImpl(Container.java:2127)

        at java.awt.Window.dispatchEventImpl(Window.java:2489)

        at java.awt.Component.dispatchEvent(Component.java:4572)

        at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:710)

        at java.awt.EventQueue.access$400(EventQueue.java:82)

        at java.awt.EventQueue$2.run(EventQueue.java:669)

        at java.awt.EventQueue$2.run(EventQueue.java:667)

        at java.security.AccessController.doPrivileged(Native Method)

        at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)

        at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)

        at java.awt.EventQueue$3.run(EventQueue.java:683)

        at java.awt.EventQueue$3.run(EventQueue.java:681)

        at java.security.AccessController.doPrivileged(Native Method)

        at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)

        at java.awt.EventQueue.dispatchEvent(EventQueue.java:680)

        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)

        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)

        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)

        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)

        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)

        at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

resolved both issues; 

issue 1: The scripting of drop was not qualifying the object with the database name and those trying to drop the object was trying to drop off the login users database.  object now qualified with database name.

issue 2: node method equals was not checking for null on object compare and throwing NPE.  

Verified in ADS v15.0.0-dev-306