Well, I found one thing out. I was trying to change the data icons to a systemui.apk that was already modded with a 1% battery. I guess my icon changes were conflicting with something in that 1% deal? I know superrlaxx was able to do it. He also has a bit more experience than me doing this. I Guess, I'll make my own 1% battery and icon mod for this rom and try again.
I didn't however sign this apk and it worked find on a freshly installed Simplex. Are we sure signing is needed for this?
I worked off an existing flashable battery mod for the script and never signed the apk. I don't wipe cache either.I do start with my existing systemui.apk and framework-res.apk to make changes to.
I'll add that i always decompile the systemui.apk, make changes, then compile. If something is wrong, it'll error out. Perhaps this would be a better method as the errors will help you figure out what's wrong.