On Monday 18 July 2011 16:33:27 Mazzoni, Camila wrote: > The assembly ran for > a couple of days until I got the problem. Would really appreciate some > help. OK, I looked at the log. You used 3.2.1 which has a bug in the memory management: under some circumstances, the algorithm to constraint memory consumption leads to increased memory needs in each round. Your only option (apart getting the swap space enlarged, which you should do anyway): use a newer version of MIRA. Releae candidate 3 of version 3.4 is out fresh at SourcForge, should work for your data. B.