There has a been a persistent, infrequent bug in the management of merged Google+ Pages for local where the owner of the page is unable to access the management of the page and receives a 500 Error from Google. Google knows about the bug but has been unable to quash it as of yet.
Kaleh, a Top Contributor in the Google for Business forum with lots of experience on the Plus side of the house had this to suggest.
Another option to try (based upon a report in a Google+ Discuss Forum topic) is accessing the following modified version of the URL:
The other user’s situation is very different from yours, but I find it interesting that he can perform most management tasks when he has the /b/ in the URL, but can’t even see the page through the page management interface.
If you have experienced this bug let me know whether this work around solves the problem.
What is the work around? I ended up getting my leg caught in a fan.
Comment by andrew (19 comments) — March 20, 2013 @ 9:13 pm
@andrew
Google is aware of the problem. Only choice is waiting or deleting the page
Comment by Mike Blumenthal (1946 comments) — March 21, 2013 @ 6:28 am
ah okay, thanks Mike.
Comment by andrew (19 comments) — March 21, 2013 @ 11:42 am