In the function "most_views_filter" at line 22, appears a
global $views;
but $views is the parameter that is passed to the function
The same thing happend in the other plugin
"My Views module - Started/Participated Topics"
but now in the line 26.
Just commenting both lines are enought.
It´s important to solve this issue. Other plugin that create other views are affected by this bug (like support-forum , http://bbpress.org/plugins/topic/16)