Addendum to the Paper "On Quasilinear Parabolic Evolution Equations in   Weighted $L_p$-Spaces II"
  This note is devoted to a small, but essential, extension of Theorem 2.1 of our recent paper [6]. The improvement is explained in Section 1 and proved in Section 2. The importance of the extension is demonstrated in Section 3 with an application to the Navier-Stokes system in critical $L_q$-spaces. 
Jan Pruess, Mathias Wilke
math.AP