Nexus 5, 4.4.4, dalvik runtime. Currently on cyanogenmod 11, but this problem started prior.
I rooted my phone, initially to run xposed framework. I actually got it installed and opened, but I noticed I couldn't install any modules. Uninstalled, tried to reinstall, found I couldn't sideload any apks. Cancel button works fine, but install button does not respond to touch in any way.
Everything I have tried:
Using various apk installers/file managers. They all still bring me to the install screen where I can't push install, so they're unless
Clearing caches (dalvik, package installer)
Making sure all screen filter apps are off
Making sure all security options are correct (do not verify app, allow unknown sources)
Flashing a new Rom entirely (cyanogenmod)
I'm at a loss. Are there any options left to try that may fix this?