Notice: Undefined index: membership_type in og_entity_property_info() (line 236 of /home/p21r7220/public_html/sites/all/modules/og/og.module).

This is sporadic in that it only occurs every now and then... I have a base OG install and have found that this error is logged in the Drupal Commons issues log, but I feel it is directly related to OG and as such should be here.

Comments

Hi,

I had this same issue, caused by an incorrect configuration of a field acting as OG reference.
I don't remember what my "sort by" configuration was under entity configuration, but since I switched it to "Dont sort" these errors are gone.

Hope this helps!