Add Seed Records System Error java.lang.NullPointerException

I'm getting a  java.lang.NullPointerException when trying to attach seed records in in a Rollbase app I am working on.

Not sure what this relates to:.

There is no extra information in the system error log, but our main admin user gets an email with the following details:

Subject: SandBoxLXTT (ID=343087) on PROD1: NullPointerException

Date: 15 July 2015 6:19:43 am AEST

java.lang.NullPointerException Customer: SandBoxLXTT

java.lang.NullPointerException
            at p4.a254.recordsAttach(a254.java:689)
            at p4.a248.dispatch(a248.java:528)
            at org.apache.jsp.setup.appView_jsp._jspService(appView_jsp.java:124)
            at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
            at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
            at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
            at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
            at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
            at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
            at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
            at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
            at com.rb.util.web.NoCacheFilter.doFilter(NoCacheFilter.java:41)
            at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
            at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
            at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
            at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
            at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
            at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
            at org.apache.catalina.valves.StuckThreadDetectionValve.invoke(StuckThreadDetectionValve.java:193)
            at org.apache.catalina.valves.CrawlerSessionManagerValve.invoke(CrawlerSessionManagerValve.java:180)
            at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
            at org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:314)
            at org.apache.catalina.valves.RequestFilterValve.process(RequestFilterValve.java:305)
            at org.apache.catalina.valves.RemoteAddrValve.invoke(RemoteAddrValve.java:83)
            at org.apache.catalina.valves.RequestFilterValve.process(RequestFilterValve.java:305)
            at org.apache.catalina.valves.RemoteHostValve.invoke(RemoteHostValve.java:83)
            at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
            at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
            at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
            at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
            at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
            at java.lang.Thread.run(Thread.java:722)

 We have not been able to identify what the ID 343087 relates to.