Redcar redcar

When pressing "+" I get the following error:

--- Error in Redcar::EditView "key-press-event" signal handler:
    TypeError: can't convert nil into String
    /home/dvyjones/code/redcar/bin/../plugins/core/lib/core/keymap.rb:50:in `+'
    /home/dvyjones/code/redcar/bin/../plugins/core/lib/core/keymap.rb:50:in `clean_gdk_eventkey'
    /home/dvyjones/code/redcar/bin/../plugins/edit_view/lib/wrapper.rb:55:in `connect_signals'
    /home/dvyjones/code/redcar/bin/../vendor/glitter.rb:202:in `call'
    /home/dvyjones/code/redcar/bin/../vendor/glitter.rb:202:in `signal_connect'
    /home/dvyjones/code/redcar/bin/../lib/gtk.rb:38:in `call'
    /home/dvyjones/code/redcar/bin/../lib/gtk.rb:38:in `main'
    /home/dvyjones/code/redcar/bin/../lib/gtk.rb:38:in `main_with_queue'
    /home/dvyjones/code/redcar/bin/../plugins/core/lib/core/gui.rb:26:in `set_main_loop'
    /home/dvyjones/code/redcar/bin/../freebase2/lib/freebase/databus.rb:988:in `call'
    /home/dvyjones/code/redcar/bin/../freebase2/lib/freebase/databus.rb:988:in `call'
    /home/dvyjones/code/redcar/bin/../freebase2/lib/freebase/databus.rb:598:in `call'
    /home/dvyjones/code/redcar/bin/../freebase2/lib/freebase/core.rb:74:in `initialize'
    /home/dvyjones/code/redcar/bin/../freebase2/lib/freebase/core.rb:73:in `new'
    /home/dvyjones/code/redcar/bin/../freebase2/lib/freebase/core.rb:73:in `initialize'
    /home/dvyjones/code/redcar/bin/../freebase2/lib/freebase/core.rb:35:in `new'
    /home/dvyjones/code/redcar/bin/../freebase2/lib/freebase/core.rb:35:in `startup'
    ./bin/redcar:122:in `startup'
    ./bin/redcar:142

I suspect this is caused by this:
(http://github.com/danlucraft/redcar/blob/master/plugins/core/lib/co...) bits = redcar_key.split("+")

I am currently working on a fix.