  In this paper, we study Lipschitz-Fredholm vector fields on
Bounded-Fr\'{e}chet-Finsler manifolds. In this context we generalize the
Morse-Sard-Brown theorem, asserting that if $M$ is a connected smooth
bounded-Fr\'{e}chet-Finsler manifold endowed with a strengthened connection
$\mathcal{K}$ and if $\xi$ is a smooth Lipschitz-Fredholm vector field on $M$
with respect to $\mathcal{K}$ which satisfies condition (CV). Then, for any
smooth functional $l$ on $M$ which is associated to $\xi$, the set of the
critical values of $l$ is of the first category in $\rr$. Therefore, the set of
the regular values of $l$ is a residual Baire subset of $\mathbb{R}$.
