We had to roll back to 1.6.0p13 because of a crash during ESXi inventory.
In file share/check_mk/inventory/esx_systeminfo function inv_esx_systeminfo, the parsed parameter is treated as a dict, but in our case it is a nested list:
'parsed': [[u'vendor', u'VMware,', u'Inc.'],
[u'name', u'VMware', u'ESXi'],
[u'propertyCollector', u'ha-property-collector'],
[u'apiVersion', u'6.0'],
[u'sessionManager', u'ha-sessionmgr'],
[u'osType', u'vmnix-x86'],
[u'version', u'6.0.0'],
[u'build', u'6921384'],
[u'licenseManager', u'ha-license-manager'],
[u'perfManager', u'ha-perfmgr'],
[u'rootFolder', u'ha-folder-root']]