Failing Verification causing Crash

needed to xxxx most of the code but something fails during the verification of toString
crashes the app. Only happens on a Samsung I9190 Galaxy S4 mini as far as i can tell.

W/dalvikvm: VFY: invoke type does not match method type of Ljava/lang/Object;.toString
07-28 16:19:47.213 4395-6657/xxx.dev.debug W/dalvikvm: VFY: rejecting opcode 0x70 at 0x002c
07-28 16:19:47.213 4395-6657/xxx.dev.debug W/dalvikvm: VFY: rejected LxxxxModel$AjcClosure3;.access$super (LxxxxModel$AjcClosure3;Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/Object;
07-28 16:19:47.213 4395-6657/xxxx.dev.debug W/dalvikvm: Verifier rejected class LxxxModel$AjcClosure3;