galaxy.web.framework.decorators ERROR 2014-12-18 12:22:04,760 Uncaught exception in exposed API method:

Traceback (most recent call last):

  File "/home/galaxy/galaxy-dist/lib/galaxy/web/framework/decorators.py", line 244, in decorator

    rval = func( self, trans, *args, **kwargs)

  File "/home/galaxy/galaxy-dist/lib/galaxy/webapps/galaxy/api/workflows.py", line 231, in create

    populate_state=True,

  File "/home/galaxy/galaxy-dist/lib/galaxy/workflow/run.py", line 18, in invoke

    modules.populate_module_and_state( trans, workflow, workflow_run_config.param_map )

  File "/home/galaxy/galaxy-dist/lib/galaxy/workflow/modules.py", line 843, in populate_module_and_state

    step_errors = module_injector.inject( step, step_args=step_args )

  File "/home/galaxy/galaxy-dist/lib/galaxy/workflow/modules.py", line 830, in inject

    state, step_errors = module.compute_runtime_state( trans, step_args )

  File "/home/galaxy/galaxy-dist/lib/galaxy/workflow/modules.py", line 264, in compute_runtime_state

    state = self.decode_runtime_state( trans, step_updates.pop( "tool_state" ) )

KeyError: 'tool_state'