Topic-icon getting invalid image file when trying to create a new user

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when trying to create a new user with fbconnect 4.0 -- after the user gets created, i get invalid image size or format from joomla system error messeges. I think this is the initial post that goes on the user feed on FB - can someone tell me the correct size or image format that need to be used when logging on to the joomla site and when returning to the joomla site ?
thanks
mjh
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Support Specialist
Does the error message start with "Facebook API Error: ". If not, then it's not an error from trying to push something to Facebook. If that's the case, can you tell us any profile plugins you have enabled, because it's likely a setting in those components that isn't liking the size of the avatar submitted, from Facebook to them.

Thanks,
Alex
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