Subscriber failure when going through GF

The contact form on my client's site is accepting and storing information in it, We are using GF Version 1.6.7 and the 1.7 MC addon on the live site, and 1.6.3 of the MC addon on one of the dev sites, since this thread seemed to suggest that a rollback might help, and I had gone back all the way to 1.5 at one point (which I had thought was working but apparently not):

http://www.gravityhelp.com/forums/topic/mailchimp-not-getting-subscribers

I thought it was a double opt-in issue, but the subscription isn't happening either with or without that checked. I installed the GF Logging Add-On that Chris H sent me, and this is the info that I am getting back:

Transaction failed. Error 270 - "Recipes" is not a valid Interest Group for the list: ChefsBest Subscribers

And based on the array dump in the logs, this is what is being sent:

[GROUPINGS] => Array
(
[0] => Array
(
[name] => What news would you like to receive?
[groups] => Recipes, tips, and news
)
)

It looks to me as if it is treating the groups as a comma delimited list, when in fact the whole group is: "Recipes, tips, and news", so it is correct when it returns the error '"Recipes" is not a valid Interest Group', and maybe it should be enquoting the group.

Any help is appreciated.

Is there a beta release that addresses the issue? And do you know what the eta of the fix is please? Thanks.

I don't know if I'm having the same issue, but I just installed Gravity Forms with the MailChimp add-on with multiple Groups (none have comma in the name), and though the form works collecting info into WordPress and with the double Opt-IN the off, the subscribers get added to MailChimp.

However, when I turn Double Opt-in on, as MailChimp recommends, the opt-in email never gets sent and the thus the subscriber is never added to the MailCHimp list.

I already contact MailChimp and they said I needed to contact Gravity Forms.

Any suggestions?

Thanks,
Michael