i successes on 3rd try too, i not sure what problem but aroma installer always will fail at the middle of installation.
You need to wipe everything before flashing the zip. System, data, cache, then flash
It does work. I've tried it and done it on an S-ON device, and -viperboy- does it the same way for the Sprint HTC One since it only has htc-dev unlock, and it also works there.