Signing Tango Project

[jazzyjester]

Hello,

I'm trying to sign project with tango library and receive these errors

Proguard returned with error code 1. See console
[2015-11-16 11:56:40 --Default] Warning: com.google.atap.tangoservice.Tango$1$1: can't find superclass or interface com.google.atap.tangocloudservice.IOnTileAvailable$Stub
[2015-11-16 11:56:40 --Default] Warning: com.google.atap.tangoservice.Tango: can't find referenced class com.google.atap.tangocloudservice.ITangoCloudService
[2015-11-16 11:56:40 --Default] Warning: com.google.atap.tangoservice.Tango: can't find referenced class com.google.atap.tangocloudservice.ITangoCloudService
[2015-11-16 11:56:40 --Default] Warning: com.google.atap.tangoservice.Tango: can't find referenced class com.google.atap.tangocloudservice.ITangoCloudService
[2015-11-16 11:56:40 --Default] Warning: com.google.atap.tangoservice.Tango: can't find referenced class com.google.atap.tangocloudservice.ITangoCloudService
[2015-11-16 11:56:40 --Default] Warning: com.google.atap.tangoservice.Tango: can't find referenced class com.google.atap.tangocloudservice.ITangoCloudService
[2015-11-16 11:56:40 --Default] Warning: com.google.atap.tangoservice.Tango$1: can't find referenced class com.google.atap.tangocloudservice.ITangoCloudService$Stub
[2015-11-16 11:56:40 --Default] Warning: com.google.atap.tangoservice.Tango$1: can't find referenced class com.google.atap.tangocloudservice.ITangoCloudService
[2015-11-16 11:56:40 - Homestyler-Default] Warning: com.google.atap.tangoservice.Tango$1: can't find referenced class com.google.atap.tangocloudservice.ITangoCloudService$Stub
[2015-11-16 11:56:40 - Homestyler-Default] Warning: com.google.atap.tangoservice.Tango$1: can't find referenced class com.google.atap.tangocloudservice.ITangoCloudService
[2015-11-16 11:56:40 - Homestyler-Default] Warning: com.google.atap.tangoservice.Tango$1$1: can't find referenced class com.google.atap.tangocloudservice.IOnTileAvailable$Stub
[2015-11-16 11:56:40 - Homestyler-Default] Warning: com.google.atap.tangoservice.Tango$1$1: can't find referenced class com.google.atap.tangocloudservice.IOnTileAvailable$Stub
[2015-11-16 11:56:40 --Default] Warning: com.google.atap.tangoservice.Tango$1$1: can't find referenced class com.google.atap.tangocloudservice.IOnTileAvailable
[2015-11-16 11:56:40 --Default] Warning: there were 13 unresolved references to classes or interfaces.
[2015-11-16 11:56:40 --Default] You may need to specify additional library jars (using '-libraryjars').
[2015-11-16 11:56:40 --Default] java.io.IOException: Please correct the above warnings first.
[2015-11-16 11:56:40 --Default] at proguard.Initializer.execute(Initializer.java:321)
[2015-11-16 11:56:40 --Default] at proguard.ProGuard.initialize(ProGuard.java:212)
[2015-11-16 11:56:40 --Default] at proguard.ProGuard.execute(ProGuard.java:87)
[2015-11-16 11:56:40 --Default] at proguard.ProGuard.main(ProGuard.java:493)

I tried using the standard way to keep the classes:

-keep class com.google.** { ; }
-keep interface com.google.* { *; }

and its still not working...