Ok, a fix for the invisible aliens is posted. I put updated versions of MC Command Center (grab the Script and Package file) and MC Cleaner. MC Cleaner fixes the problem going forward. The MC Command Center patch gives us a new console command to fix the problem if you have it on any of the Sims in your current world. If you have the red "X" or invisible aliens, you can run "alien_fix" on the console. It takes between 15 and 30 seconds to finish running and will tell you the number of Sims changed when it is done.
Please NOTE: Any clothes previously being worn by the Alien will be reset to their alien uniforms. Their disguises will be unaffected. This will affect ALL Alien Sims in your game. Some may change colors or things like that if they weren't messed-up previously.
Thanks to Denim and Thraxis for the Save files to look into this issue and come-up with a console command to fix it!
Please let me know if there are any other related issues!
