I installed ftp.redhat.com/contrib/libc6/i386/glimpse-4.12.5-1.i386.rpm to enable the search features of exmh. But exmh fails in Glimpse_Init (extrasInit.tcl) because "glimpse -V" exits with a 1 status. Arguably, this is a bug in glimpse and the parsing of the -V option should end with RETURNMAIN(1) instead of RETURNMAIN(0) (see glimpse src file main.c). Just as arguably exmh should not care and should merely parse the output for having reasonable values. In any case, one or the other ought to be fixed.
If glimpse is returning an error code despite having executed correctly (which is the only way exmh has to check if it executed correctly -- there could be bad data in the output), then this is a glimpse bug, which should probably be reported to the glimpse mailing list at "glimpse.edu" or to the webglimpse developers at <http://webglimpse.net/developers/submit.html>.