I've not had this issue I don't choose green thumb and am able to found my initial settlement in every game I start. Are you by any chance using a custom soverign saved from an old pre 1.09n patch?

hi.  Happened three times in a row, three new games.  Not saved sov from pre 109n.

Setup choices were Procopine (sp?) and paraden (sp). Tried three times, found kingdom button greyed out, hot "b" key, get message, need one food.  Just tried a different civ/kingdom - and I could found a kingdom.

So, I was lucky enough to choose both the sov, and the civ that together elicit the bug on my very first games?  LOL  ROFL.  

Procipinee and Pariden have been always fine for me no matter how many games I start with them.

Yeah that was me in chat jmccrea.  My first game with the new patch was Procipinee w/ Pariden and I didn't encounter it.  

Doesn't mean it's not there though, especially with someone else reporting the same combo producing the issue.  

What I found out is that I could not found my first city on any empty space, but only on some (the option was gray). I lost 2 turns trying to find the one where it worked. Maybe this is a same issue?