Upgrade from 1.5.0p23 to 1.6.x - questions

Thanks Karl,

I went back to sites.mk and realized I had to make that change in a few places =
that fixed one issue with the master, but now when I try to activate changes , the slave nodes generate the following error: (all slave nodes)

Internal automation error: Configuration error. You treat us as a remote, but we have an own distributed WATO configuration!
Traceback (most recent call last):
File "/omd/sites/SLAVEXXX_netwk_stage/lib/python/cmk/gui/wato/pages/automation.py", line 186, in _execute_automation_command
html.write(repr(automation.execute(automation.get_request())))
File "/omd/sites/SLAVEXXX_netwk_stage/lib/python/cmk/gui/watolib/sites.py", line 717, in get_request
self._verify_slave_site_config(site_id)
File "/omd/sites/SLAVEXXX_netwk_stage/lib/python/cmk/gui/watolib/automation_commands.py", line 46, in _verify_slave_site_config
_("Configuration error. You treat us as "
MKGeneralException: Configuration error. You treat us as a remote, but we have an own distributed WATO configuration!

any ideas ?

Christian