Did Nostradamus Claim that Napoleon was an Antichrist?

No.  He never even mentions Napoleon by name.  In Century VIII, Quatrain 1 Nostradamus writes that ‘Paul, Nay, Loron will be more of fire than of blood.’  According to enthusiasts, the letters ‘Paul, Nay, Loron’ rearranged become ‘Napoleon Roy,’ or ‘Napoleon the King,’ who was certainly a man of war rather than royal lineage.  The next two lines in the quatrain refer to the imprisoning of the ‘Piuses,’ which could arguably be a reference to Napoleon’s imprisonment of Popes Pius VI and VII. 

First of all, "Paul,"Nay" and "Loron" do NOT become "Napoleon Roy" when jumbled around.  They become "NAPOLUNAL ROY."   That's some seriously bad spelling, people.  Couldn't Nostradamus do a better anagram than that?  How about "Ronny, Leo, Opa?"   At least that has all the letters. 

And once we start playing the anagram game, then any quatrain can mean almost anything.  For example, Nostradamus is an anagram for "DAMN, ROAST US."  Does this mean Nostradamus is really the Devil getting ready to damn us to Hell and then roast us in eternal hellfire?  Hmmm.  I think not....    

Why did Scaliger get so mad at Nostradamus?

Julius Caesar Scaliger was one of the leading scholars of his day.  In 1531, Scaliger invited Nostradamus to come to Agen to study with him.  However, several years later, after Nostradamus' first wife and two children died of the plague, Nostradamus and his mentor had a terrible falling out.  What got Scaliger so mad?  I suggest the answer in the new book Quatrain.  Go to http://www.quatrainbyjohnmedler.com/ and click on "Links" to find out how to order the book.

Did Nostradamus Even Know How to Read Astrological Charts?

 No.  Even though he was known far and wide as a psychic with prophetic gifts, when it came to giving horoscopes, Nostradamus would often have his own clients provide the birth charts instead of doing the charts himself.  When he was forced on a few occasions to determine the birth charts on his own, he bungled the job terribly, and made many errors.  His horoscope for the Crown Prince Rudolph Maximilian, for example, was riddled with errors.