What version of Xposed are you trying to install, what processor architecture does your device have, what ROM are you using, and have you read the first 2 posts of the "Xposed for Lollipop" discussion thread?
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer? | Terms of Service