I know one of the goals of Axe was to be compatible with the Nspire 84+ emulator. However, I think the compatibility for the app itself may have been lost at some point, and only the compatibility of compiled programs retained. My best guess would be the 1.0.0 release is that point, as that's when Axe started using a flash unlock exploit and writing data to flash, and I wouldn't be surprised if these aren't emulated properly.
Does anyone have experiene with using past versions of Axe on their Nspire 84+ emulator, or would anyone be willing to take some time and pinpoint the version that broke compatibility? If my guess isn't correct and it wasn't in fact the 1.0.0 release, it may be something that's reasonably fixable.