Due to a logic error introduced in GS/64 2.0, samples of the call stack 
taken by ProfMonitor only covered the top half of the stack.  The resulting 
statistical summaries would therefore not account for method calls in the 
lower half of the stack.
In the method ProfMonitor>>gatherResults, replace the line:
1 to: depth -1 by: 2 do: [:m |
with:
1 to: (depth * 2) - 1 by: 2 do: [:m |
Last updated: 1/15/14