I tried "pond_bridge_night_4k.hdr" and "waterbuck_trail_8k.hdr" (I don't have links, sorry, just checked my downloads folder). But I'm still on 1.5.2 if that makes any difference.
"pond_bridge_night_4k.hdr" was exactly the same file i tried yesterday without any issues with 1.7 RC8, i'll try "waterbuck" and if it'll load fine, then it probably will be safe to assume, that whatever issue was in 1.5, it is fixed now.
I also got errors with few of this maps, but only with maps that are lower than 16k.
What version of Corona did you try with?
EDIT: "waterbuck_trail_8k.hdr" loads and renders without issue too.