My users are having problems using the app with ads. (using admob over playservices)
0 java.lang.IllegalArgumentException: optimizedDirectory doesn't exist: /data/data/<app_package>/cache
1 at dalvik.system.DexPathList.<init>(DexPathList.java:97)
2 at dalvik.system.BaseDexClassLoader.<init>(BaseDexClassLoader.java:48)
3 at dalvik.system.DexClassLoader.<init>(DexClassLoader.java:57)
4 at com.google.android.gms.internal.j.e(Unknown Source)
5 at com.google.android.gms.internal.j.a(Unknown Source)
6 at com.google.android.gms.internal.k.a(Unknown Source)
7 at com.google.android.gms.internal.v$b.run(Unknown Source)
8 at com.google.android.gms.internal.eo$1.run(Unknown Source)
9 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
10 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
11 at java.lang.Thread.run(Thread.java:864)
Can anyone help me with this?