Dynamic Pricing JS error for Bundled Products

I'm running magento 1.4.0.1 and when i create a bundled product with dynamic pricing I get a JS error telling me that the "bundle" object is undefin开发者_运维技巧ed.

I can see where that var is being declared in the code, but it's not instantiating for some reason.

Is this a known issue? Is there a fix?

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I did find the reason for this. It was a JS plugin that I had installed. Watchout for third party JS addons, there is some chance it could cause problems with the magento JS.