UNEXPECTED TOP-LEVEL EXCEPTION

  B4A version: 6.50 Parsing code. (0.56s) Compiling code. (1.63s) ObfuscatorMap.txt file created in Objects folder. Compiling layouts code. (0.05s) Organizing libraries. (0.18s) Generating R file. (7.03s) Compiling generated Java code. (11.93s) Convert byte code - optimized dex. Error UNEXPECTED TOP-LEVEL EXCEPTION: java.lang.IllegalArgumentException: already added: Landroid/support/annotation/PluralsRes; at com.android.dx.dex.file.ClassDefsSection.add(ClassDefsSection.java:122) at com.android.dx.dex.file.DexFile.add(DexFile.java:161) at com.android.dx.command.dexer.Main.processClass(Main.java:615) at ...