It seems that the parser doesn't catch incomplete array declarations which leads to strange errors at app start.
reference > https://www.b4x.com/android/forum/threads/invalid-value-for-field.83950/
B4X:
Private audioBoostImages(2) As String=Array("audio_volume_low.png","audio_volume_high.png")
'should be
Private audioBoostImages(2) As String=Array As String("audio_volume_low.png","audio_volume_high.png")
reference > https://www.b4x.com/android/forum/threads/invalid-value-for-field.83950/