Hi, I have a workflow that basically needs a select parameter as input. 2 steps in the workflow actually need the very same input. I don't think there is a (easy) way to let the user only input the parameter once and that it is passed to both steps. Anyhow, currently - as a workaround and not very user friendly - the user needs to input the very same parameter twice, for each step where that parameter is required. The first issue however, is that as soon as the first parameter is set, the second is set as well apparently (they have the same name, that could explain) which is fine, but not to the chosen one, eg. both are kind of reset to default. No errors or something, simply reset, which makes it impossible to enter the parameter. Next, I hoped to solve the issue by upgrading galaxy to the most recent version. This was not the case since the workflow did not run at all anymore, which brings me to the second issue (see exception dump below). Any ideas anyone ? Thanks and regards, Marc Error - <type 'exceptions.AttributeError'>: 'list' object has no attribute 'output_name' URL: http://smith:8889/workflow/run?id=4b187121143038ff File '/home/galaxy/galaxy-dev/eggs/Paste-1.6-py2.7.egg/paste/exceptions/errormiddleware.py', line 143 in __call__ app_iter = self.application(environ, start_response) File '/home/galaxy/galaxy-dev/eggs/Paste-1.6-py2.7.egg/paste/recursive.py', line 80 in __call__ return self.application(environ, start_response) File '/home/galaxy/galaxy-dev/eggs/Paste-1.6-py2.7.egg/paste/httpexceptions.py', line 632 in __call__ return self.application(environ, start_response) File '/home/galaxy/galaxy-dev/lib/galaxy/web/framework/base.py', line 160 in __call__ body = method( trans, **kwargs ) File '/home/galaxy/galaxy-dev/lib/galaxy/webapps/galaxy/controllers/workflow.py', line 1523 in run enable_unique_defaults=trans.app.config.enable_unique_workflow_defaults) File '/home/galaxy/galaxy-dev/lib/galaxy/web/framework/__init__.py', line 836 in fill_template return self.fill_template_mako( filename, **kwargs ) File '/home/galaxy/galaxy-dev/lib/galaxy/web/framework/__init__.py', line 847 in fill_template_mako return template.render( **data ) File '/home/galaxy/galaxy-dev/eggs/Mako-0.4.1-py2.7.egg/mako/template.py', line 296 in render return runtime._render(self, self.callable_, args, data) File '/home/galaxy/galaxy-dev/eggs/Mako-0.4.1-py2.7.egg/mako/runtime.py', line 660 in _render **_kwargs_for_callable(callable_, data)) File '/home/galaxy/galaxy-dev/eggs/Mako-0.4.1-py2.7.egg/mako/runtime.py', line 692 in _render_context _exec_template(inherit, lclcontext, args=args, kwargs=kwargs) File '/home/galaxy/galaxy-dev/eggs/Mako-0.4.1-py2.7.egg/mako/runtime.py', line 718 in _exec_template callable_(context, *args, **kwargs) File '/home/galaxy/galaxy-dev/database/compiled_templates/base.mako.py', line 42 in render_body __M_writer(unicode(next.body())) File '/home/galaxy/galaxy-dev/database/compiled_templates/workflow/run.mako.py', line 171 in render_body __M_writer(unicode(do_inputs( tool.inputs, step.state.inputs, errors.get( step.id, dict() ), "", step, None, used_accumulator ))) File '/home/galaxy/galaxy-dev/database/compiled_templates/workflow/run.mako.py', line 40 in do_inputs return render_do_inputs(context.locals_(__M_locals),inputs,values,errors,prefix,step,other_values,already_used) File '/home/galaxy/galaxy-dev/database/compiled_templates/workflow/run.mako.py', line 435 in render_do_inputs __M_writer(unicode(row_for_param( input, values[ input.name ], other_values, errors, prefix, step, already_used ))) File '/home/galaxy/galaxy-dev/database/compiled_templates/workflow/run.mako.py', line 338 in row_for_param return render_row_for_param(context,param,value,other_values,error_dict,prefix,step,already_used) File '/home/galaxy/galaxy-dev/database/compiled_templates/workflow/run.mako.py', line 498 in render_row_for_param __M_writer(unicode(conn.output_name)) AttributeError: 'list' object has no attribute 'output_name' ________________________________________ THIS E-MAIL MESSAGE IS INTENDED ONLY FOR THE USE OF THE INDIVIDUAL OR ENTITY TO WHICH IT IS ADDRESSED AND MAY CONTAIN INFORMATION THAT IS PRIVILEGED, CONFIDENTIAL AND EXEMPT FROM DISCLOSURE. If the reader of this E-mail message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately at ablynx@ablynx.com. Thank you for your co-operation. "NANOBODY" and "NANOCLONE" are registered trademarks of Ablynx N.V. ________________________________________