Redcar Closing Error

Error in command Redcar::Top::CloseWindowCommand
NoMethodError: undefined method `close' for nil:NilClass
/boutique/Code/redcar/plugins/application_swt/lib/application_swt/window.rb:215:in `closed'
/boutique/Code/redcar/plugins/application_swt/lib/application_swt/window.rb:60:in `to_proc'
/boutique/Code/redcar/plugins/core/lib/core/observable.rb:103:in `call'
/boutique/Code/redcar/plugins/core/lib/core/observable.rb:103:in `observable_run_blocks'
/boutique/Code/redcar/plugins/core/lib/core/observable.rb:103:in `map'
/boutique/Code/redcar/plugins/core/lib/core/observable.rb:103:in `observable_run_blocks'
/boutique/Code/redcar/plugins/core/lib/core/observable.rb:96:in `notify_listeners'
/boutique/Code/redcar/plugins/application/lib/application/window.rb:197:in `close'
/boutique/Code/redcar/plugins/application/lib/application/event_spewer.rb:18:in `ignore'
/boutique/Code/redcar/plugins/application/lib/application/window.rb:189:in `close'
/boutique/Code/redcar/plugins/redcar/redcar.rb:151:in `check_for_running_processes_and_close_window'
/boutique/Code/redcar/plugins/runnables/lib/runnables/running_process_checker.rb:29:in `call'
/boutique/Code/redcar/plugins/runnables/lib/runnables/running_process_checker.rb:29:in `check'
/boutique/Code/redcar/plugins/redcar/redcar.rb:148:in `check_for_running_processes_and_close_window'
/boutique/Code/redcar/plugins/redcar/redcar.rb:141:in `check_for_modified_tabs_and_close_window'
/boutique/Code/redcar/plugins/edit_view/lib/edit_view/modified_tabs_checker.rb:29:in `call'
/boutique/Code/redcar/plugins/edit_view/lib/edit_view/modified_tabs_checker.rb:29:in `check'
/boutique/Code/redcar/plugins/redcar/redcar.rb:138:in `check_for_modified_tabs_and_close_window'
/boutique/Code/redcar/plugins/redcar/redcar.rb:120:in `execute'
/boutique/Code/redcar/plugins/application/lib/application/command/executor.rb:25:in `execute'
/boutique/Code/redcar/plugins/application/lib/application/command.rb:79:in `run'
/boutique/Code/redcar/plugins/redcar/redcar.rb:1024:in `window_close'
/boutique/Code/redcar/plugins/application/lib/application/event_spewer.rb:27:in `create'
/boutique/Code/redcar/plugins/application/lib/application/event_spewer.rb:25:in `each'
/boutique/Code/redcar/plugins/application/lib/application/event_spewer.rb:25:in `create'
/boutique/Code/redcar/plugins/application_swt/lib/application_swt/window.rb:22:in `shellClosed'
/boutique/Code/redcar/plugins/swt/lib/swt/event_loop.rb:13:in `start'
/boutique/Code/redcar/plugins/core/lib/core/gui.rb:39:in `start'
/boutique/Code/redcar/lib/redcar.rb:176:in `pump'
/boutique/Code/redcar/bin/redcar:29
Error in command Redcar::Top::ToggleToolbar
NativeException: java.lang.IllegalArgumentException: Argument not valid
org.eclipse.swt.SWT:-1:in `error'
org.eclipse.swt.SWT:-1:in `error'
org.eclipse.swt.SWT:-1:in `error'
org.eclipse.swt.widgets.Widget:-1:in `error'
org.eclipse.swt.widgets.Widget:-1:in `checkParent'
org.eclipse.swt.widgets.Widget:-1:in `<init>'
org.eclipse.swt.widgets.Control:-1:in `<init>'
org.eclipse.swt.widgets.Scrollable:-1:in `<init>'
org.eclipse.swt.widgets.Composite:-1:in `<init>'
org.eclipse.swt.widgets.CoolBar:-1:in `<init>'
sun/reflect/NativeConstructorAccessorImpl.java:-2:in `newInstance0'
sun/reflect/NativeConstructorAccessorImpl.java:39:in `newInstance'
sun/reflect/DelegatingConstructorAccessorImpl.java:27:in `newInstance'
java/lang/reflect/Constructor.java:513:in `newInstance'
org/jruby/javasupport/JavaConstructor.java:291:in `newInstanceDirect'
/boutique/Code/redcar/plugins/application_swt/lib/application_swt/toolbar.rb:38:in `new_proxy'
/boutique/Code/redcar/plugins/application_swt/lib/application_swt/toolbar.rb:39:in `initialize'
/boutique/Code/redcar/plugins/application_swt/lib/application_swt/window.rb:128:in `new'
/boutique/Code/redcar/plugins/application_swt/lib/application_swt/window.rb:128:in `refresh_toolbar'
/boutique/Code/redcar/plugins/application_swt/lib/application_swt/window.rb:54:in `to_proc'
/boutique/Code/redcar/plugins/core/lib/core/observable.rb:103:in `call'
/boutique/Code/redcar/plugins/core/lib/core/observable.rb:103:in `observable_run_blocks'
/boutique/Code/redcar/plugins/core/lib/core/observable.rb:103:in `map'
/boutique/Code/redcar/plugins/core/lib/core/observable.rb:103:in `observable_run_blocks'
/boutique/Code/redcar/plugins/core/lib/core/observable.rb:96:in `notify_listeners'
/boutique/Code/redcar/plugins/application/lib/application/window.rb:178:in `refresh_toolbar'
/boutique/Code/redcar/plugins/application/lib/application.rb:208:in `refresh_toolbar!'
/boutique/Code/redcar/plugins/application/lib/application.rb:208:in `each'
/boutique/Code/redcar/plugins/application/lib/application.rb:208:in `refresh_toolbar!'
/boutique/Code/redcar/plugins/redcar/redcar.rb:693:in `execute'
/boutique/Code/redcar/plugins/application/lib/application/command/executor.rb:25:in `execute'
/boutique/Code/redcar/plugins/application/lib/application/command.rb:79:in `run'
/boutique/Code/redcar/plugins/application/lib/application/menu/item.rb:45:in `selected'
/boutique/Code/redcar/plugins/application_swt/lib/application_swt/menu.rb:128:in `widgetSelected'
/boutique/Code/redcar/plugins/swt/lib/swt/event_loop.rb:13:in `start'
/boutique/Code/redcar/plugins/core/lib/core/gui.rb:39:in `start'
/boutique/Code/redcar/lib/redcar.rb:176:in `pump'
/boutique/Code/redcar/bin/redcar:29
Error in command Redcar::Top::CloseWindowCommand
NoMethodError: undefined method `close' for nil:NilClass
/boutique/Code/redcar/plugins/application_swt/lib/application_swt/window.rb:215:in `closed'
/boutique/Code/redcar/plugins/application_swt/lib/application_swt/window.rb:60:in `to_proc'
/boutique/Code/redcar/plugins/core/lib/core/observable.rb:103:in `call'
/boutique/Code/redcar/plugins/core/lib/core/observable.rb:103:in `observable_run_blocks'
/boutique/Code/redcar/plugins/core/lib/core/observable.rb:103:in `map'
/boutique/Code/redcar/plugins/core/lib/core/observable.rb:103:in `observable_run_blocks'
/boutique/Code/redcar/plugins/core/lib/core/observable.rb:96:in `notify_listeners'
/boutique/Code/redcar/plugins/application/lib/application/window.rb:197:in `close'
/boutique/Code/redcar/plugins/application/lib/application/event_spewer.rb:18:in `ignore'
/boutique/Code/redcar/plugins/application/lib/application/window.rb:189:in `close'
/boutique/Code/redcar/plugins/redcar/redcar.rb:151:in `check_for_running_processes_and_close_window'
/boutique/Code/redcar/plugins/runnables/lib/runnables/running_process_checker.rb:29:in `call'
/boutique/Code/redcar/plugins/runnables/lib/runnables/running_process_checker.rb:29:in `check'
/boutique/Code/redcar/plugins/redcar/redcar.rb:148:in `check_for_running_processes_and_close_window'
/boutique/Code/redcar/plugins/redcar/redcar.rb:141:in `check_for_modified_tabs_and_close_window'
/boutique/Code/redcar/plugins/edit_view/lib/edit_view/modified_tabs_checker.rb:29:in `call'
/boutique/Code/redcar/plugins/edit_view/lib/edit_view/modified_tabs_checker.rb:29:in `check'
/boutique/Code/redcar/plugins/redcar/redcar.rb:138:in `check_for_modified_tabs_and_close_window'
/boutique/Code/redcar/plugins/redcar/redcar.rb:120:in `execute'
/boutique/Code/redcar/plugins/application/lib/application/command/executor.rb:25:in `execute'
/boutique/Code/redcar/plugins/application/lib/application/command.rb:79:in `run'
/boutique/Code/redcar/plugins/redcar/redcar.rb:1024:in `window_close'
/boutique/Code/redcar/plugins/application/lib/application/event_spewer.rb:27:in `create'
/boutique/Code/redcar/plugins/application/lib/application/event_spewer.rb:25:in `each'
/boutique/Code/redcar/plugins/application/lib/application/event_spewer.rb:25:in `create'
/boutique/Code/redcar/plugins/application_swt/lib/application_swt/window.rb:22:in `shellClosed'
/boutique/Code/redcar/plugins/swt/lib/swt/event_loop.rb:13:in `start'
/boutique/Code/redcar/plugins/core/lib/core/gui.rb:39:in `start'
/boutique/Code/redcar/lib/redcar.rb:176:in `pump'
/boutique/Code/redcar/bin/redcar:29