I have this error when I run my Android application:
No fields have a DatabaseField annotation in class [[Lmodel.Vak;
My class Vak
It's probably late for giving solution but this is my solution:
you see proguard try to obfuscating the code and if you read proguard in depth or intro
http://proguard.sourceforge.net/FAQ.html
-keep class com.j256.**
-keepclassmembers class com.j256.** { *; }
-keep enum com.j256.**
-keepclassmembers enum com.j256.** { *; }
-keep interface com.j256.**
-keepclassmembers interface com.j256.** { *; }
-keepclassmembers class classpath.** {
public *;
}