PDF, First Printing
Page 95-96, Nicol Marik section
Her rank/title says Warden-General, but the actual biography mentions her as Minister-General.
With her background, she could very easily be the Warden-General. However, at the same time, the text of the biography mentions how she has requested relief from her position as Minister-General several times.
Additionally, Kenyon Marik is described as relieving Nicol as Minister-General in 3139. The position of Minister-General didn't exist until July 3139 by my interpretation of the text, which means either Nicol was relieved after less than six months in her position (or was granted one of her requests, which goes against her bio), the date is wrong, or her position is wrong (which also goes against the text of her bio).
Page 53 also mentions Nikol as one of the first two Warden-Generals, after Thaddeus Marik. The problem with this part is that her bio doesn't mention being the Warden-General at all.
Suggested fix: Expand/edit Nikol's background to mention how she was relieved from the position of Minister-General in order to fill the position of Warden-General in 3139 after the death of Thaddeus Marik.
Alternate: Edit to remove references to Nikol as Minister-General, as her bio and Kenyon Marik's bio are the only places this information is mentioned.
EDIT: spelling
EDIT 2:
PDF, First Printing
Page 132, Introductory Rules Equipment Table
The first entry is listed as "C/2, AC/5, AC/10, AC/20"
Suggested fix: Add the "A" to what should be "AC/2" at the beginning of the entry.