[GameGuardian Lollipop Fix]

And you are using the same exact APK, or you downloaded from the site on each device? Just for kicks, download the attachment, and see if that installs  GG_6.0.6.apk

Yes i tried 6.0.6 and 6.0.5 but neither worked. The attachment you provided installed, i opened and granted it supersu access, and gameguardian closed itself. Now when i open gameguardian, it keeps force closing.

[GameGuardian Lollipop Fix]

I also get the parsing error, it installs fine on NC2 but on OC1 i get a parsing error. The video above me illustrates the problem.