tj3ts_sender crash

$ tj3ts_sender --dryrun -r chem2
TaskJuggler v3.5.0 - A Project Management Software

Copyright (c) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
              by Chris Schlaeger <chris@linux.com>

This program is free software; you can redistribute it and/or modify it under
the terms of version 2 of the GNU General Public License as published by the
Free Software Foundation.

Fatal: undefined method `include?' for nil:NilClass
/usr/lib/ruby/vendor_ruby/2.0.0/taskjuggler/RuntimeConfig.rb:60:in `block in configure'
/usr/lib/ruby/vendor_ruby/2.0.0/taskjuggler/RuntimeConfig.rb:57:in `each'
/usr/lib/ruby/vendor_ruby/2.0.0/taskjuggler/RuntimeConfig.rb:57:in `configure'
/usr/lib/ruby/vendor_ruby/2.0.0/taskjuggler/apps/Tj3TsSender.rb:62:in `appMain'
/usr/lib/ruby/vendor_ruby/2.0.0/taskjuggler/Tj3AppBase.rb:146:in `main'
/usr/lib/ruby/vendor_ruby/2.0.0/tj3ts_sender.rb:16:in `<top (required)>'
/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require'
/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require'
/usr/bin/tj3ts_sender:4:in `<main>'

*******************************************************************************
You have triggered a bug in TaskJuggler version 3.5.0!
Please see the user manual on how to get this bug fixed!
http://www.taskjuggler.org/tj3/manual/Reporting_Bugs.html#Reporting_Bugs_and_Feature_Requests
*******************************************************************************

/usr/lib/ruby/vendor_ruby/2.0.0/taskjuggler/MessageHandler.rb:301:in `addMessage': RuntimeError (RuntimeError)
	from /usr/lib/ruby/vendor_ruby/2.0.0/taskjuggler/MessageHandler.rb:190:in `fatal'
	from /usr/lib/ruby/vendor_ruby/2.0.0/taskjuggler/MessageHandler.rb:312:in `fatal'
	from /usr/lib/ruby/vendor_ruby/2.0.0/taskjuggler/Tj3AppBase.rb:161:in `rescue in main'
	from /usr/lib/ruby/vendor_ruby/2.0.0/taskjuggler/Tj3AppBase.rb:127:in `main'
	from /usr/lib/ruby/vendor_ruby/2.0.0/tj3ts_sender.rb:16:in `<top (required)>'
	from /usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require'
	from /usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require'
	from /usr/bin/tj3ts_sender:4:in `<main>'