I was getting the error below with 4.2. Played with various Proguard parameters and also tried post-verification but nothing helped.
So I downgraded to 4.1 and I'm fine again.
Error verifying method com/vipera/ges/gfx/RichText format()V
Approximate bytecode offset 247: Inconsistent or missing stackmap at target
Method............: 24538d8 'com/vipera/ges/gfx/RichTextItem.
(virtual)'.