Theme Farm Questions

Hi,

I just have a few small questions about the Farms 133 theme pack.

Is it right that not all the themes are compatible with marketpress. Several of the themes I tried don't show the menus correctly or have other issues. For example Nature has this error:

Warning: Missing argument 2 for MarketPress::filter_list_pages() in /home/fondelif/public_html/wp-content/plugins/marketpress.php on line 1026

My second question is about upgrading the themes. I have a list of them in upgrades available, but I am not sure if I should upgrade them as I got them in the farm pack, and if I upgrade them, I would be getting it from the original source, without the wpmudev magic. So what should I do about upgrading these themes?

Thanks.