Fireflies in Fireflies invade Morrowind look wrong

There are a couple of issues with the Mod "Fireflies invade Morrowind" (http://mw.modhistory.com/download-26-14733). There is a weird texture effect at the back of the fireflies (see screenshot), they don't really seem to emit light and the flying fireflies seem to be missing completely. Attached is the console output and a screenshot.

Example firefly:

Content file: Fireflies.esp RefID: firefly_w Cell: Bitter Coast Region Grid: -1 -9 Coordinates: Vector3(-5516.75, -69642, 310.183)

OpenMW version: Latest Nighly by ace haxalot (dab05471) 32bit

Note: The "Unhandled property type: NiShadeProperty" warnings appear because there was a dead Dark Brotherhood assassin on the ground.

(RM-2069 from redmine: created on 2014-10-27 by Thomas Staudinger, , relates #2042 (closed))

Attachments: openmwFIM.txt