Modules won't import on Mac

I am new to vassal and am getting an error when I try to import modules I have downloaded saying “Invalid Import File”. I have tried multiple files and tried redownloading them as well. The odd thing is that the very first module did import just fine. The problem did not start until I tried to import a second.

Model: iMac 21.5" Mid 2011
OS: Mac OSX 10.7.5
CPU: 2.5 GHz Intel Core 15
Memory: 8GB 1333 MHz DDR3
Video: AMD Radeon HD 6750M 512 MB
VASSAL: 3.2.8
Java: 1.7.0_25
Module: MageKnight_v284
Arkham_Horror_FFG v1.71
HeroQuest v0.9 (this is the one that worked)

Figured it out. Had to use open module instead of import module.