CCL:G: G09: ONIOM error: Maximum number of microiterations cycles exceeded!

From: "Vera Cathrine" <vera.cathrine|*|yahoo.com>
Subject: CCL:G: G09: ONIOM error: Maximum number of microiterations cycles exceeded!
Date: Tue, 13 Mar 2012 13:00:30 -0400

 Sent to CCL by: "Vera  Cathrine" [vera.cathrine ~ yahoo.com]
 Hello All,
 I would like to perform a geometry optimization using ONIOM (QM/MM) method and
 electronic embedding (EE). To achieve convergence I have first optimized my
 system using mechanical embedding (ME). The ME optimization terminated normally.
 Then I tried to optimize the geometry with the same method but with electronic
 embedding (EE). I am encountering the following error:
 ONIOM: Microiterations cycle   26 out of a maximum of  25
  Maximum number of microiterations cycles exceeded!
  Terminating job.
  Error termination via Lnk1e in /usr/local/gaussian/g09/l120.exe at Tue Mar 13
 17:17:49 2012.
 my route section reads as
  #p oniom(pm3:amber)=embed geom=connectivity opt=(quadmac,maxstep=10,ma
  xcycle=512) iop(2/15=3) nosymm
 I also tried to change some default optimization criteria but all failed.
 I would thank you for any suggestion to fix this error.
 Best wishes,
 Vera