From the ebuild: [ -f result/linux-gtk-${ARCH}-sdk.zip ] || die "motif zip bundle was not build properly!" Which is obviously incorrect. I'll attach two patches which fix this (and the typos in the error message too).
Created attachment 33555 [details, diff] patch against pre8 ebuild.
Created attachment 33556 [details, diff] patch against pre9 ebuild.
Fixed for all 3.0.0 ebuilds. Thanks!