While my friend and I were making d20 Future characters the other day, we came across a mean infinite loop involving the cybernetic device called a feat plexus. The problem lies in the Windfall and Cybertaker feats.

Windfall and Cybertaker cannot be incorporated into a feat plexus. Conceptually speaking, a feat plexus is a cybernetic implant that allows a character to add new information, skills, reflexes, and maneuvers -- in other words, benefits that could reasonably be learned or gained through training. Thus, the GM should disallow any feat that doesn't match this concept in a feat plexus. In general, if you spot a combination that looks like an unreasonable loophole in the rules, assume you can't use it.