well, i am not an expert on MR, or Rendering for that matter...
but, did you check in My Documents > Maya in C?
also, check in the temp forlder in Documents and Settings> (user name)> Temp ( assuming you have WinXp)
also, if you just rendered the file. it might mean that maya just created the log file for you. so, if you search your disk for files created, say, within the last one hour, you might find it....
hope this helps..
your model is impressive.... any latest updates on that?? are you done with modeling it?