Alrighty, the problem appears to be that in the Runes.txt file, there is a gap in the mods, i.e. there are 7 slots, 6 are filled, but the 2nd is blank rather than the last. I don't see any other issue with the runeword, and would not have expected D2 to make an issue out of a blank slot that wasn't at the end. At some point I'll try to update the webpage maker program to identify this as an error. Thanks for pointing this out to me.
<edit>I've updated the webpage maker:
Web Page Maker Thread. When I ran the updated program, it also pointed out that "Deception" is bugged too, in the same way. I've uploaded both 32bit and 64bit versions of the program, my apologies for not realizing that I was producing 64bit versions earlier.</edit>