When I use Export to CSV on a datagrid in a particular case I'm getting the following java error. Somebody knows what's happening? java.util.ArrayList cannot be cast to com.mendix.systemwideinterfaces.core.IMendixIdentifier at jY.a(SourceFile:104) at jY.a(SourceFile:56) at ec.a(SourceFile:172) at ec.a(SourceFile:137) at ec.a(SourceFile:111) at ec.execute(SourceFile:85) at jg.a(SourceFile:280) at jg.a(SourceFile:212) at jg.processRequest(SourceFile:168) at fr.a(SourceFile:75) at com.mendix.core.MxRuntime.processRequest(SourceFile:889) at com.mendix.m2ee.server.handler.RuntimeHandler.handle(RuntimeHandler.java:39) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:113) at org.eclipse.jetty.server.Server.handle(Server.java:334) at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:559) at org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:1007) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:747) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:209) at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:406) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:462) at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:436) at java.lang.Thread.run(Thread.java:619)