I have an issue with a wordpress theme that I'm using, where I cannot add widgets to the sidebars. The drag and drop function does not work.
I am able to move widgets around in other themes.
I was wondering what kind of code in the theme may be causing such an issue?
I have tried to fix this by adding a Google plugin, but it doesn't seem to have helped.
Are there any plusgin that allow me to edit widget without the drag and drop functionality needed by default?
I had a similar problem - found out that by deactivating the feedburner plugin it got resolved. Some kind of possible conflict there - see if disabling any plugins would help?
This is a common problem with themes that don't correctly enqueue jQuery. Switch to the twentytwelve theme and see if widgets work; if so, it's your theme. (It could also be a plugin problem.)
You need to use Firebug with Firefox, or use the developer tools in Chrome or Safari or IE to see what javascript is loading on your site and any errors.
Ask the theme developer if you can't debug javascript. The error you see
undefined' is not an object
is too vague to figure out without much more info.