As i can't edit my post ( Newbie effect ?),
more facts : using the etc/enigma2/setting files from my 6.4 backup (so with the fully working Autocamsetup 0.3), i was able to extract:
config.plugins.autoCamSetup.autocam.defcam=none
config.plugins.autoCamSetup.autocam.enabled=true
config.plugins.autoCamSetup.autocam.pip=0
config.plugins.autoCamSetup.autocam.switchinfo=false
then; with enigma2 stopped, i have included those line on the setting files on the 7.1, reboot, and the settings were written, but as you can guess, still crashes.
Kind regards,
Vik