Hi all, I'm trying to package my tool wrapper to release it in the ToolShed. I need to download the associated binary file and change the permissions. I wrote a tool_dependency xml file with a downlod_binary and chmod actions. My tool_dependency_dir is well defined in my universe file. The download is ok, but I get an error during the "chmod" action. So I tried with your example, faToTwoBit (https://wiki.galaxyproject.org/DownloadingBinaries), and I get the same bug. Do you know the problem ? Do I need to configure someting else ? log : tool_shed.util.tool_dependency_util DEBUG 2014-07-07 11:28:34,346 Updating an existing record for version 0.0.1 of tool dependency faToTwoBit for revision 5ac8ed26842c of repository mytool by updating the status from Never installed to Installing. tool_shed.galaxy_install.tool_dependencies.recipe.step_handler DEBUG 2014-07-07 11:28:34,374 Attempting to download from http://hgdownload.cse.ucsc.edu/admin/exe/linux.x86_64/faToTwoBit to bin 127.0.0.1 - - [07/Jul/2014:11:28:36 +0200] "POST /admin_toolshed/repository_installation_status_updates HTTP/1.1" 200 - "http://127.0.0.1:8080/admin_toolshed/prepare_for_install" "Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20140610 Firefox/24.0 Iceweasel/24.6.0" tool_shed.galaxy_install.install_manager ERROR 2014-07-07 11:28:39,038 Error installing tool dependency faToTwoBit version 0.0.1. Traceback (most recent call last): File "/home/nlapalu/Galaxy/galaxy-dist/lib/tool_shed/galaxy_install/install_manager.py", line 110, in install_and_build_package_via_fabric tool_dependency = self.install_and_build_package( app, tool_shed_repository, tool_dependency, actions_dict ) File "/home/nlapalu/Galaxy/galaxy-dist/lib/tool_shed/galaxy_install/install_manager.py", line 79, in install_and_build_package current_dir = os.path.abspath( os.path.join( work_dir, dir ) ) File "/usr/lib/python2.7/posixpath.py", line 75, in join if b.startswith('/'): AttributeError: 'NoneType' object has no attribute 'startswith' Thanks for your help; nico