Unable to merge dex

Question

I have Android Studio Beta. I created a new project with compile my old modules but when I tried launching the app it did not launch with the message:

Error:         


        

Answer 1

I find out the reason of this problem for my project. I was added one dependency twice in build.gradle. One time by adding dependency and one time again by adding jar dependency:

compile 'org.achartengine:achartengine:1.2.0'
...
implementation files('../achartengine-1.2.0.jar')

after remove the first line problem solved.