Hello, I'd am trying to export histories to upload to another galaxy instance. For some histories, it works fine. However, for others, I get an error. When I turn on debug, I get the error pasted below. Any thoughts on what is the cause of "object has no attribute 'hid'"? Thanks! Todd Server Error Module paste.exceptions.errormiddleware:*143* in |__call__| |>> <http://knot.cnsi.ucsb.edu:8080/history/export_archive#>app_iter *=* self*.*application*(*environ*,* start_response*)*| Module paste.debug.prints:*98* in |__call__| |>> <http://knot.cnsi.ucsb.edu:8080/history/export_archive#>environ*,* self*.*app*)*| Module paste.wsgilib:*539* in |intercept_output| |>> <http://knot.cnsi.ucsb.edu:8080/history/export_archive#>app_iter *=* application*(*environ*,* replacement_start_response*)*| Module paste.recursive:*80* in |__call__| |>> <http://knot.cnsi.ucsb.edu:8080/history/export_archive#>*return* self*.*application*(*environ*,* start_response*)*| Module paste.httpexceptions:*632* in |__call__| |>> <http://knot.cnsi.ucsb.edu:8080/history/export_archive#>*return* self*.*application*(*environ*,* start_response*)*| Module galaxy.web.framework.base:*145* in |__call__| |>> <http://knot.cnsi.ucsb.edu:8080/history/export_archive#>body *=* method*(* trans*,* ****kwargs *)*| Module galaxy.web.controllers.history:*591* in |export_archive| |>> <http://knot.cnsi.ucsb.edu:8080/history/export_archive#>history_exp_tool*.*execute*(* trans*,* incoming *=* params*,* set_output_hid *=* True *)*| Module galaxy.tools:*1276* in |execute| |>> <http://knot.cnsi.ucsb.edu:8080/history/export_archive#>*return* self*.*tool_action*.*execute*(* self*,* trans*,* incoming*=*incoming*,* set_output_hid*=*set_output_hid*,* history*=*history*,* ****kwargs *)*| Module galaxy.tools.actions.history_imp_exp:*103* in |execute| |>> <http://knot.cnsi.ucsb.edu:8080/history/export_archive#>include_deleted*=*incoming*[* 'include_deleted' *]* *)*| Module galaxy.tools.imp_exp:*419* in |setup_job| |>> <http://knot.cnsi.ucsb.edu:8080/history/export_archive#>input_datasets *=* *[* assoc*.*dataset*.*hid *for* assoc *in* job*.*input_datasets *]*| *AttributeError: 'NoneType' object has no attribute 'hid'* -- *************************************** Todd Oakley, Professor Ecology Evolution and Marine Biology University of California, Santa Barbara Santa Barbara, CA 93106 USA ***************************************