Yikes, they've stopped supporting it with no warning:
https://creators.ning.com/forum/topics/ning-network-archiver-issue-unable-to-log-into-the-service-ning-2
..." Please be informed that archiver is no longer supported.
I do apologize for any inconveniences this decision might cause.
Best regards,
Ning Team. "
--
...just another satisfied Jamroom customer.
Migrated from Ning to Jamroom June 2015
updated by @strumelia: 05/01/18 12:43:54PM