Realized that the files for github will somehow cause some problems with the variations in the product post.
So I loaded back my original backup.
Edit the 2 original files jquery.blockUI and jquery.blockUI.min by removing the command below in both files (make sure you backup first):
alert('blockUI requires jQuery v1.3 or later! You are using v' + $.fn.jquery);return;
Do not delete the {} at the front and back of the command though.
That stopped the annoying alert on the webpages and then the variations will still work! :)
Until woocommerce come up with a fix....