GoldenGate Veridata : cannot save compare pair

  Hello All,

I'm new of Goldengate Veridata

I've test install goldengate veridata server and agent on my machine (localhost)

and i can use connection configuration setting but when i created group configuration

and go to compare pair configuration, setting and preview

but when i click 'Save' to save my compare pair configuration, there's error below

An unexpected error occurred. Please contact the system administrator. Original error message was: Exception [EclipseLink-5006] (Eclipse Persistence Services - 2.1.2.v20101206-r8635): org.eclipse.persistence.exceptions.OptimisticLockException Exception Description: The object [com.goldengate.veridata.comparison.Group@abb06000] cannot be updated because it has changed or been deleted since it was last read. Class> com.goldengate.veridata.comparison.Group Primary Key> 1,001; nested exception is javax.persistence.OptimisticLockException: Exception [EclipseLink-5006] (Eclipse Persistence Services - 2.1.2.v20101206-r8635): org.eclipse.persistence.exceptions.OptimisticLockException Exception Description: The object [com.goldengate.veridata.comparison.Group@abb06000] cannot be updated because it has changed or been deleted since it was last read. Class> com.goldengate.veridata.comparison.Group Primary Key> 1,001