http://developers.de/blogs/damir_dobric/archive/2012/06/13/knockout-out-of-stack-space.aspxWhen working with knockout and drop-down lists (combo-boxes) you might get following error. SCRIPT28: Out of stack space jquery-1.7.2.min.js, line 2 character 22680 This seems to be knockout framework bug or it is by design. Whatever the case is, theenCommunityServer 2008 SP1 (Build: 30619.63)