Thanks! I'm glad to hear it's working on a ROM other than BACKside, and I hope it helps your ROM development with an easier upgrade process!
I need to add some error checking/catches to the parsing code. It's pretty simple code, just using splits, so it shouldn't be too hard to prevent FCs in the next version. However, the manifest is what ensures your users get your package exactly as it is meant to be delivered. So manifest errors are not allowed, and even with code improvements, should prevent the app from continuing at one point or another.
I also need to add a check of the currently installed recovery, and only show the auto-install option for those known to work with it.
(Known working and tested: CWM-Green, BobZhome, IHO, Drew's-Touch, should work with other CWM based recoveries known to work safely on the OV).