  We first investigate the attractor solution associated with Assisted
Inflation in Heterotic M-Theory to see if it is stable. By perturbing the
solutions we find a solitary stable fixed point with the general path through
phase space dependent upon the Calabi-Yau data and the number of five-branes.
We then go on to examine the effect of including non-perturbative corrections
to the inflaton potential arising from boundary-brane instantons as well as
higher order brane interaction terms. The result is that Assisted Inflation is
only possible if we allow fine tuning of the superpotential, and that generic
non-perturbative superpotentials will prevent this kind of inflation from
occurring.
