Problems with demos

[marcosecchi]

Unity 2019.4.16f1
Corgi 6.6

Steps:

• Create fresh Unity project
• Import Corgi 6.6
• Import AI Brain Extensions from Asset Store OR install xNode, AI Brain Extensions for MMTools and AI Brain extensions for Corgi Engine separately.

Repeatedly get these warnings:
Port 'Walk-in' already exists in WalkAndJump
Port 'Walk-out' already exists in WalkAndJump

• Run Feature_Subgraphs demo - AI characters do nothing. Multiple "Argument cannot be null" errors. Multiple missing scripts errors. Port "Walk-in" and "Walk-out" already exist warnings.

• Run Feature_PluggableMultiBrain or Feature_Master demos - AI characters seem to be behaving as intended. Multiple "Argument cannot be null" errors. Multiple missing scripts errors. Port "Walk-in" and "Walk-out" already exist warnings.