Module conditional fields is generating javascript errors

Hi there!

Problem:
Dependency of 2 fields is throwing a javascript error:
TypeError: $(...).closest(...)[(e.effect.effect + animation)] is not a function
http://wwenpw-test.saperience.de/sites/all/modules/conditional_fields/js...
Line 78

Constructed by:
2 Fields
3 Dependencies

Scenario:

We´ve added 2 Dependencies for making a field visible under the given conditions. Everything worked so far. But as soon as we´ve added a third one to empty the textfield, the dependent isn´t showing up anymore. We´ve searched a bit, tried other dependencies but nothing worked so far.

When we looked it up in the Browser with Firebug, we saw that error.
Do you have any solution?

Thank you all in advance!