Hi Henrik and thanks.
You need set $loadJQuery and $incTabsStyle to true (in new version is in default). :oops:
Hi drobbins,
thank for betatesting. 
I released new version (0.7.6b). Validation problem could cause a wrong path to wz_toolitp (fixed).
BTW (to all): It is a “bad idea” change the copyright and other links. 
Especially reference to wunderground must be included. Rest is propriety.