I see fairly consistent crashes when scrolling a select list on an expense report on http://ecs.quickarrow.com. Crash log from r38068 attached.
Created attachment 24905 [details]
crash log from r38068
From you backtrace it seems you have some extensions installed. Please try removing them and see if the problem persists.
See also: bug 22080.
*** This bug has been marked as a duplicate of 22080 ***