Jed,
I get doc errors due to http://petsc.cs.iit.edu/petsc/petsc-release-3.1/rev/34db3f4fbf0b
>>>>>>>
106] [107]
! Undefined control sequence.
l.4336 dt^{n} = dt_{\text
{increment}}*dt^{n-1}*\frac{|| F(u^{n-1}) ||}{||...
<<<<<<<<<
Reverting the above changest fixes the problem. Can you check on this?
Note there is also a spurious '40%' in the change.
satish