java.lang.IllegalStateException: Error in org.openide.nodes.EntrySupport$Default with entry Children.Keys.KE[driverName: Oracle JDBC driver
databaseProductVersion: Oracle Database 10g Enter,0] from among null in {Children.Keys.KE[positionedDelete: false
subqueriesInComparisons: false
actions: [{name=Connect, ,0]=Children.Info[Children.Keys.KE[positionedDelete: false
subqueriesInComparisons: false
actions: [{name=Connect, ,0],length=1], Children.Keys.KE[positionedDelete: false
subqueriesInComparisons: false
actions: [{name=Connect, ,0]=Children.Info[Children.Keys.KE[positionedDelete: false
subqueriesInComparisons: false
actions: [{name=Connect, ,0],length=1], Children.Array.AE[]=Children.Info[Children.Array.AE[],length=0], Children.Keys.KE[driverName: Oracle JDBC driver
databaseProductVersion: Oracle Database 10g Enter,0]=Children.Info[Children.Keys.KE[driverName: Oracle JDBC driver
databaseProductVersion: Oracle Database 10g Enter,0],length=1], Children.Keys.KE[driverName: MySQL-AB JDBC Driver
databaseProduct
        at org.openide.nodes.EntrySupport$Default.checkInfo(EntrySupport.java:341)
        at org.openide.nodes.EntrySupport$Default.updateRemove(EntrySupport.java:361)
        at org.openide.nodes.EntrySupport$Default.setEntries(EntrySupport.java:324)
        at org.openide.nodes.Children$Keys$2.run(Children.java:1411)
        at org.openide.util.Mutex.postRequest(Mutex.java:1251)
        at org.openide.util.Mutex.postWriteRequest(Mutex.java:582)
        at org.openide.nodes.Children$Keys.applyKeys(Children.java:1420)
        at org.openide.nodes.Children$Keys.setKeys(Children.java:1364)
        at org.openide.nodes.AsynchChildren.run(AsynchChildren.java:152)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997)