using espresso when only have apk

[mustermannt...@gmail.com]

Hallo,

firstly I tried to use robotium only by having the apk from the app and it works. and then I changed the robotium jar file with jar files from espresso. and run this test but I have 2 different errors :
1)  [2014-07-18 16:42:44 - TestEspresso] Installation error: INSTALL_PARSE_FAILED_UNEXPECTED_EXCEPTION
[2014-07-18 16:42:44 - TestEspresso] Please check logcat output for more details.
[2014-07-18 16:42:44 - TestEspresso] Launch canceled!

2) [2014-07-18 16:45:39 - TestEspresso] Error generating final archive: Found duplicate file for APK: LICENSE.txt
Origin 1: C:\00-Espresso\Workspace-Eclipse-Java\TestEspresso\libs\hamcrest-integration-1.1.jar
Origin 2: C:\00-Espresso\Workspace-Eclipse-Java\TestEspresso\libs\hamcrest-core-1.1.jar

so if I run the test, I got the first one, and if I run it again I got the second one and so on.
can anybody help me about this issues? coz I think it is possible to run espresso when only have the apk.