Usually this error is caused by a corrupted download (e.g. it didn’t finish downloading because of a bad internet connection). The version of the HBKENG resource I have (which might be slightly out-of-date) is 70,065 KB. If yours significantly differs in size, I’d say that this is, indeed, the cause of your problem. Either way, I would try downloading it again.
We have on our to-do list to verify resource downloads after downloading to keep this kind of error to a minimum. Hopefully that will be done in the next month or so.