JKR Sues Steve Van Der Ark (Lexicon Steve)

[va32h]

Rowling, Bloomsbury and Warner Brothers are suing Lexicon Steve and
his publishers to prevent the release of a printed version of the
Lexicon. 

JKR says this will interfere with her future publication of the
encyclopedia. 

Hmmm, I thought the encyclopedia was supposed to be full of NEW
material that we hadn't seen before.  How is this different from the
Mugglenet book which used JKR's characters, place names, etc. 

Why object to the book but not the Lexicon itself (which JKR has oft
praised and claimed she looked to when writing?)