Can not publish to MMe-bug or am I missing something?

I am unable to publish to MMe from whitin Aperture. I have the album icon showing in the library pane, it sinchronizes for some time, but the album doesn't show on Mobile Me.

When I go to Preferences, Web, the program freezes and I have to force-quit.

I didn't have this problem before; I suspect that I picked it up with the last upgrade or with the previous one.

What I am doing to circumvent the problem is to export the abum to the desktop and from there let MMe upload it. No problem here.

Appreciate any suggestions.