Here is what I could find on this topic.
It seems that, yet again, my detractors are proved (not proven) wrong.
"Proven is usually an adjective (e.g., a proven formula), and proved is usually the inflected form of the verb prove (e.g., I proved it; I have proved it).
This is not a rule, though, and exceptions abound, especially in American English, where proven is often used as a participial inflection of the verb. For example, where a British writer is likely to write I have proved you wrong, an American writer might write I have proven you wrong."
Seeing as I was using prove as a verb, the accepted rule is to use proved and not proven. Something is proved wrong, not proven wrong -- although either is acceptable in American English. Proved to be is preferred to proven to be.
Englishman may have gotten confused by my using a more complicated tense -- proved to be wrong as opposed to simply proved wrong. A bit too much for his simple brain.
You guys really ought to get on more solid footing before launching such gay grammatical attacks.
Your only self defense mechanism is that you inevitable are incapable of acknowledging your errors.
Keep trying if you wish but please be a bit more challenging.