[support] Problem with Organic groups

[Roger]

using Drupal 7.14 all modules updated I had the problem reported last 
week with organic groups trashing  my site.
Following advice I upgraded OG to 7.x-2.x-dev which may cure some ills 
however it needs to run Migrate.
Migrate of Upgrade OG membership - 7.2 Re-populate group ID and group 
entity, deprecating the OG group entity Executed but failed

An AJAX HTTP error occurred. HTTP Result Code: 500 Debugging information 
follows. Path: /d7x/batch?render=overlay&id=48&op=do StatusText: Service 
unavailable (with message) ResponseText: EntityMalformedException: 
Missing bundle property on entity of type node. in entity_extract_ids() 
(line 7539 of /var/www/html/d7x/includes/common.inc).

There are similar error reports on google,not specifically for OG,  but 
no resolution.

Has anyone had similar problem and how was it fixed please.

I have reported it  but as my report was only the third  and the other 2 
said the problem was fixed I see no way of getting assistance.
Og cannot be removed without irreversible damage to the database.
What should be done please.