BlackBerry: UnsupportedOperationException in payment sdk below 5.0 Simulator

I am using payment sdk. It's work fine in 5.0 simulator but below 5.0 simulator it throws error "class 'java.lang.Unsupport开发者_运维问答edOperationException' not found." in starting the application.

When I comment payment SDK code then application work fine. after debuging I got following error at the starting point before application enter into the main() method.

Starting PaymentSdk
VM:LINK PaymentSdk
Class 'java.lang.UnsupportedOperationException' not found.
Linker error: 'VerifyError' for PaymentSdk
Error starting PaymentSdk: Class 'java.lang.UnsupportedOperationException' not found.

PaymentSdk is the name of application.

The SDK only works on 4.5 devices and above.