The customer was doing a silent installation of OMNIbus 7.4, but the installer would exit with this message:
The installer cannot run on your configuration. It will now quit
Good grief! Could this be any less informative? Fortunately google came to the rescue and served this up (when presented with the entire error message.)
http://www-01.ibm.com/support/docview.wss?uid=swg21430495
The tech note in question is for a different installation, but the symptom was the same and indeed it was the same mistake. The customer had
LICENSE_ACCEPTED=trus
in the silent install response file.