I suppose you know my next question: What is the donatist heresy?
Magistercultuum explores the political component fairly well, although I would argue that Constantine didn;t hand back the traditores their authority, rather the end of persecution enabled them to go back to hence they came so to speak to the ire of a number of those who remained faithful throughout. However the main problem is that the donatists believed that the state of grace of the administrator of a sacrament affected its validity, ergo if you were a sinful priest any sacrament administered by you to the donatists would be invalid. Their vision of the Church was one of living saints, rather than the Church as a hospital for sinners.
Secondly, there is Biblical evidence that those who commit certain sins shouldn't preach, even if repentant, from your least favorite chapter (The one that also affirms sola scriptura later on

)
Nowhere in the bible is Sola Scriptura affirmed. You can read into your personal interpretation of a perfectly clear passage on divine inspiration all you want, but the fact remains that nowhere does the bible say that the bible (the canon of which it does not specify either) contains all that is necessary for salvation.
As to the quote in question, where does that say a repentant sinner cannot preach? It seems to me to be the requirements for ordination to begin with, and indeed candidates to the priesthood (who indeed go through the diaconate first) must fulfil certain requirements.
[On the consumption of blood]I asked this in the evangelical thread and never got an answer. Thought I'd try it out here.
Honestly I am not an jew from the era when the command was laid out so its not within my faculties to speculate as to whether it was merely a response to the imbibing of blood in pagan rituals. As to its present significance, I would presume the directive was given at the time for reasons of physical wellbeing, blood not naturally being the best thing for ones diet. Also purity could also be a factor, fortunately though it does not really require introspection on my part considering I don't consume blood products as a matter of course.
Sorry if that doesn't fill all the boxes, but at least its an answer I will be the first to admit that the area of dietary laws in relation to christianity is not my forte. I try though to make sure to answer every question directly instead of avoiding difficult questions and diverting topics. In fact (digressing

) when I was in a protestant high school I got told by the school captain no less that when talking on matters religious
"at least you answer our questions, {school chaplain} just avoids questions". Meh I suppose it happens if you have some indefensible errors, you must either admit falsehood or avoid the question. Protestantism posesses many such errors.
If the Catholic church was founded on a man, was Peter the rejected cornerstone?
Christ is the ultimate foundation of our faith, without the incarnation of God the Son there would be not christianity. Christ is indeed the stone rejected by the architects which became the cornerstone. However this allegorical reference to Christ is distinct from appointment of Peter to head the Church. One that is very clear bibically.
You are Peter, and on this rock I shall build my Church and not even the gates of hell shall prevail against it, to you I shall give the keys of the kingdom of heaven, and whatsoever you bind on earth shalt be bound in heaven, and whatsoever you loose on earth shall be loosed in heaven,
It is linguistically impossible in the english and the greek for Christ to address Peter, (who's name Cephas in aramaic, Petros in greek means rock (although the greek word for rock is Petra, which naturally had to be changed to the masculine form Petros)), digress referring to himself as the rock, and hten continue in granting Peter the powers of binding and loosing. The entire structure is Christ addressing Perter and thus the allegory of rock is as the foundational head of his Church from which it would be built up. Christ is the cornerstone of our salvation and the founder of the Church, Peter is the rock on which the founder built up that which he had established and bound upon himself. The allegories both use the petrolithic terminology, but they are distinct allegories.
From your "debate", it seems that obvously the Word by your definition it not.
is not what?
You keep trouncing the Scriptures like it was some football to be kicked around. Do you not agree that the Bible is the Word of God? Is it just some book the Jews and Catholics put together for the fun of it?
The bible is sacred scripture, it is not the word of God. The term Word of God firstly refers to the Logos, to God the Son, to Christ; secondly it refers to anything God has said to someone directly. Calling the bible the word of God is erroneous, it is inspired scripture, it is exceedingly important, the Church compiled inspired scripture into the bible precisely because it is important as a source of teaching and authority (scripture is useful for all teaching!) but it is most definitely not some God-written book which fell from heaven complete and entire, and it is most definitely not some incarnation of Christ!
Indeed if it was God manifested on earth then why don't you worship your bible, it IS the Word according to your belief and as such if you truly believe what you say you should be down on your knees in adoration of your God! Indeed to do not would be a grave disrepect to be sacrilegious, well it would be at least according to your (erroneous) belief that the bible is the Word embodied and manifest.
I keep saying that the church is a local body of believers who filled with the Spirit read and study the Bible and practice Godliness. Yet every verse I give that points to the Scriptures/Word as the embodiment of a physical God on earth you just
Mostly because you haven't brought up a single piece of scripture that says "scripture is the physical manifestation of God on earth", all you bring up is scripture that means something completely different, or scripture which only the wildest imagination could think means scripture = God (such absurdities being why the Church doesn't hold to sola scriptura [in addition to it being abiblical and anathema to the tradition passed down from the apostles]). In the context of our Sola Scriptura discussion for you to say what you say about scripture being a manifestation of God (itself wildly heterodox and heretical even to most protestants) such an assertion of yours is rendered absurd by its lack of biblical basis and indeed I note in your post here that you have not included one biblical quotation to support your views despite the fact I requested as much on a number of digressions you brought up on the Ask an Evangelical thread in regards to our original discussion on sola scriptura (and in regards to Sola Scriptura itself).
Is today's Catholicism that much removed from the Apostles?
Of course the Church is not exactly the same as it was then, the Church has deeper understanding of revelation now than it had then (Christ promised to send the Holy spirit to reveal all truth) as the deepening of understanding of divine revelation through the Holy Spirits agency in the Church continues as always. However fundamentally the traditions passed on from the apostles and held by the Church are the same now as then since nothing is altered or changed from what the apostles passed down to their successors, we believe the same things the difference is that understanding of those same things has deepened over time.