[galaxy-dev] Extract Workflow Error

Can anyone shed any light on the following erro I get when trying to extract
a workflow from my history?

⇝ TypeError: <galaxy.tools.parameters.basic.UnvalidatedValue object at
0xa5ca790> is not JSON serializable
URL: http://localhost:8082/workflow/build_from_current_history
Module weberror.evalexception.middleware:*364* in respond
<http://localhost:8082/workflow/build_from_current_history#>
 view <http://localhost:8082/workflow/build_from_current_history#>
>>   <http://localhost:8082/workflow/build_from_current_history#>app_iter *=
* self*.*application*(*environ*,* detect_start_response*)*
Module paste.debug.prints:*98* in __call__
<http://localhost:8082/workflow/build_from_current_history#>
 view <http://localhost:8082/workflow/build_from_current_history#>
>>   <http://localhost:8082/workflow/build_from_current_history#>environ*,*
self*.*app*)*
Module paste.wsgilib:*539* in intercept_output
<http://localhost:8082/workflow/build_from_current_history#>
 view <http://localhost:8082/workflow/build_from_current_history#>
>>   <http://localhost:8082/workflow/build_from_current_history#>app_iter *=
* application*(*environ*,* replacement_start_response*)*
Module paste.recursive:*80* in __call__
<http://localhost:8082/workflow/build_from_current_history#>
 view <http://localhost:8082/workflow/build_from_current_history#>
>>   <http://localhost:8082/workflow/build_from_current_history#>*return*
self*.*application*(*environ*,* start_response*)*
Module paste.httpexceptions:*632* in __call__
<http://localhost:8082/workflow/build_from_current_history#>
 view <http://localhost:8082/workflow/build_from_current_history#>
>>   <http://localhost:8082/workflow/build_from_current_history#>*return*
self*.*application*(*environ*,* start_response*)*
Module galaxy.web.framework.base:*126* in __call__
<http://localhost:8082/workflow/build_from_current_history#>
 view <http://localhost:8082/workflow/build_from_current_history#>
>>   <http://localhost:8082/workflow/build_from_current_history#>body *=*
method*(* trans*,* ****kwargs *)*
Module galaxy.web.controllers.workflow:*921* in build_from_current_history
       <http://localhost:8082/workflow/build_from_current_history#>
view<http://localhost:8082/workflow/build_from_current_history#>
>>   <http://localhost:8082/workflow/build_from_current_history#>step*.*
tool_inputs *=* tool*.*params_to_strings*(* param_values*,* trans*.*app *)*
Module galaxy.tools:*1110* in params_to_strings
<http://localhost:8082/workflow/build_from_current_history#>
 view <http://localhost:8082/workflow/build_from_current_history#>
>>   <http://localhost:8082/workflow/build_from_current_history#>*return*
params_to_strings*(* self*.*inputs*,* params*,* app *)*
Module galaxy.tools.parameters:*80* in params_to_strings
<http://localhost:8082/workflow/build_from_current_history#>
 view <http://localhost:8082/workflow/build_from_current_history#>
>>   <http://localhost:8082/workflow/build_from_current_history#>rval*[* key
 *]* *=* str*(* to_json_string*(* value *)* *)*
Module simplejson:*182* in dumps
<http://localhost:8082/workflow/build_from_current_history#>
 view <http://localhost:8082/workflow/build_from_current_history#>
Module simplejson.encoder:*312* in encode
<http://localhost:8082/workflow/build_from_current_history#>
 view <http://localhost:8082/workflow/build_from_current_history#>
Module simplejson.encoder:*265* in _iterencode
<http://localhost:8082/workflow/build_from_current_history#>
 view <http://localhost:8082/workflow/build_from_current_history#>
Module simplejson.encoder:*235* in _iterencode_dict
<http://localhost:8082/workflow/build_from_current_history#>
 view <http://localhost:8082/workflow/build_from_current_history#>
Module simplejson.encoder:*265* in _iterencode
<http://localhost:8082/workflow/build_from_current_history#>
 view <http://localhost:8082/workflow/build_from_current_history#>
Module simplejson.encoder:*235* in _iterencode_dict
<http://localhost:8082/workflow/build_from_current_history#>
 view <http://localhost:8082/workflow/build_from_current_history#>
Module simplejson.encoder:*273* in _iterencode
<http://localhost:8082/workflow/build_from_current_history#>
 view <http://localhost:8082/workflow/build_from_current_history#>
Module simplejson.encoder:*279* in _iterencode_default
<http://localhost:8082/workflow/build_from_current_history#>
 view <http://localhost:8082/workflow/build_from_current_history#>
Module simplejson.encoder:*300* in default
<http://localhost:8082/workflow/build_from_current_history#>
 view <http://localhost:8082/workflow/build_from_current_history#>
*TypeError: <galaxy.tools.parameters.basic.UnvalidatedValue object at
0xa5ca790> is not JSON serializable*

-- 
Dennis Gascoigne
0407 639 995
dennis.gascoigne@gmail.com