I solved the problem.
In the old version of my app, I had set default language as en and resource folder named as en too.
In the new version of may app I had set default language as en-us and resource folder named as en-us. This change was intended, beacuse I want to change default language of my app.
When I changed default language of the new version to en, app stoped hanging.
Is change of default language between app versions not allowed?