New plugin, be ready for new problem. why?

Hi guys…
In this topic I want to get the reason and the best solution for very important issue in ionic !

Of course Ionic is a simple, easy, and the best way to build ur application for any device in short time and cool interface… but why some new plugins it lead the build process to failed !

The new plugins works fine with new project but its not with old projects so I need more than 6-12 hours to fix the problem.

Maybe I missed some rules of installing the plugins but why this happens and what is the easiest solution for new plugin issues ?