ErrorResponse exceptions in WL log

Hi,

I´m having some troubles with ASAP 7.0.2; when sending a wo to the MessageQueue the following exception appears in nohup.out file, we are not using SRT; wo is completed and we receive a response from WL but this exception continues appearing all the time until server gets OutOfMemory.  

<MessageDrivenBean threw an Exception in onMessage(). The exception was:
 java.lang.StringIndexOutOfBoundsException: String index out of range: -1.
java.lang.StringIndexOutOfBoundsException: String index out of range: -1
        at java.lang.String.substring(String.java:1937)
        at com.mslv.asap.activation.srp.ErrorResponseBean.getExceptionName(ErrorResponseBean.java:100)
        at com.mslv.asap.activation.srp.ErrorResponseBean.onMessage(ErrorResponseBean.java:83)