I am getting lockups running my CA-Clipper application under
 DOS 6.0.  It worked under DOS 5.0.  What's going on?

 If you are running Clipper 5.01 apps *and* DOS 6.0 *and* are
 running EMM386.EXE *and* using its NOEMS command-line parameter,
 *then* you should also use the NOVCPI parameter with EMM386 *or*
 include E0 in your CLIPPER environment variable.

 This is due to a check that the Clipper 5.01 runtime performed
 to verify the existence of EMS that is not fully compatbile with
 the EMM386.EXE that comes with DOS 6.0.

 If you move to CA-Clipper 5.2e or 5.3 this problem goes away.