Invalid key: '-1'. Negative numbers are reserved when fb_registration.module enabled.

I need

a) some evidence this is caused by modules/fb

b) how to reproduce.

I haven't seen this before, and I suspect some other module is responsible.

same problem here, with fb 3.x-dev and facebook connect active

found the bug. If you go to admin/build/fb/fb_connect

and select one of the apps created. Then go to /user/register and "evoilá"

Curious. I still haven't seen it.

Is it the fb_registration.module causing this? Exactly which modules in modules/fb and modules/fb/contrib do you have enabled?

it happens when you activate certains permissins, like the "like" cappability or publish on wall.

I still can't reproduce it.

If you can reproduce it, use your browser's view source feature on that page. Then search for a tag that starts like this

<iframe src=http://www.facebook.com/plugins/registration.php?

followed by a lot of encoded values. I'm curious to see what's in those encoded values, so please post the entire <iframe> tag here.

I'm having the same issue

Here's the Iframe tag

<iframe src=http://www.facebook.com/plugins/registration.php?client_id=129190865473&redirect_uri=http%3A%2F%2Fwww.learning-aids.com%2Ftesting-dyscalculia&fields=%5B%7B%22name%22%3A%22name%22%7D%2C%7B%22name%22%3A%22email%22%7D%2C%7B%22name%22%3A%22xmlsitemap_user_priority%22%2C%22type%22%3A%22select%22%2C%22description%22%3A%22User+priority%22%2C%22options%22%3A%7B%221%22%3A%221.0%22%2C%220.9%22%3A%220.9%22%2C%220.8%22%3A%220.8%22%2C%220.7%22%3A%220.7%22%2C%220.6%22%3A%220.6%22%2C%220.5%22%3A%220.5%22%2C%220.4%22%3A%220.4%22%2C%220.3%22%3A%220.3%22%2C%220.2%22%3A%220.2%22%2C%220.1%22%3A%220.1%22%2C%220%22%3A%220.0%22%2C%22-1%22%3A%22Not+in+sitemap%22%2C%22-2%22%3A%22Default%22%7D%2C%22default%22%3A-2%7D%5D 
        scrolling="auto"
        frameborder="no"
        style="border:none;"
        allowTransparency="true"
        width="100%"
        height="360px"> 
</iframe>

Try disabling xmlsitemap, just to see if that is the source of the problem.

Hi Dave,

yes you are correct. It works with xmlsitemap disabled.

I'm not sure what xmlsitemap is adding to the form. The trick is that not every form element can be mapped directly to the facebook registration form. If you look at fb_registration.module, you'll see it jumps through some hoops to support captcha. Probably it will need to jump through more hoops to support xmlsitemap.

A workaround would be to disable xmlsitemap, or configure it to not affect this form (not sure that's possible), or write your own form_alter hook to remove or change those elements so they work with facebook registration form. It may take some experimenting to learn what works, and I'm not sure when I personally will have time. If anyone comes up with anything, please post patches here.

Subscribing. I'm having the same problem -- and XML Sitemap is a module we use on all the sites we build, so I really need a solution to this.