Could not complete the operation due to error 80020101

Question

I am running an ExtJS 4.1 application. It is running just fine in FireFox, but I get this error in Internet Explorer 8: Could not complete the operation due to error 8

Answer 1

Same thing was happening to me while using ExtJS to "require" modular javascript code. The reason: I included the "extends" keyword by mistake, which is reserved in IE8. Make sure you're not using any reserved keywords as your attribute keys without putting them in quotes first.