The new guild quest is to perform 2 adventures.
After the 1st adventure (lost skull) was completed I was not allowed to start a new one "to many adventures at once".
But I don't have any other active adventures. Everything from the first adventures is finished and gone (no menus left for the adventure or anything like that).
I have tried emptying all cache/memory etc. I have tried using google chrome, internet explorer and mozilla firefox and updating flash.
Nothing works. This way I won't complete guild quest and be out of guild coins and the other guild members will also recieve less guild coins due to the new system.
[edit] Please fix all bugs in the regular game before launching the easter event.