Drive: msi freeze crashes on some slaves (albany)

c:\hudson\workspace\addons_nuxeo-drive-5.6.0-msi>C:\Python27\python setup.py bdist_msi --freeze --dev
...
19:58:43 copying build\exe.win32-2.7\_sqlite3.pyd -> build\bdist.win32\msi
19:58:43 copying build\exe.win32-2.7\_ssl.pyd -> build\bdist.win32\msi
19:58:43 creating dist
19:58:43 Traceback (most recent call last):
19:58:43   File "setup.py", line 178, in <module>
19:58:43     **freeze_options
19:58:43   File "C:\Python27\lib\site-packages\cx_Freeze\dist.py", line 361, in setup
19:58:43     distutils.core.setup(**attrs)
19:58:43   File "C:\Python27\lib\distutils\core.py", line 152, in setup
19:58:43     dist.run_commands()
19:58:43   File "C:\Python27\lib\distutils\dist.py", line 953, in run_commands
19:58:43     self.run_command(cmd)
19:58:43   File "C:\Python27\lib\distutils\dist.py", line 972, in run_command
19:58:43     cmd_obj.run()
19:58:43   File "C:\Python27\lib\site-packages\cx_Freeze\windist.py", line 388, in run
19:58:43     self.add_files()
19:58:43   File "C:\Python27\lib\site-packages\cx_Freeze\windist.py", line 131, in add_files
19:58:43     dir.add_file(file)
19:58:43   File "C:\Python27\lib\msilib\__init__.py", line 340, in add_file
19:58:43     short = self.make_short(file)
19:58:43   File "C:\Python27\lib\msilib\__init__.py", line 299, in make_short
19:58:43     assert file not in self.short_names
19:58:43 AssertionError
19:58:43 
19:58:43 c:\hudson\workspace\addons_nuxeo-drive-5.6.0-msi>exit 1 
19:58:43 Build step 'Execute Windows batch command' marked build as failure
19:58:43 [TASKS] Skipping publisher since build result is FAILURE