getTitle: ERROR: Got a null result, in RC

[Jared]

I am running tests in RC with firefox. I get the following error randomly in my scripts. I am runing RC in firefox with proxyInjectionMode, this error starts popping up if selenium starts multiple tests. It does not happen if only one test is running. I was wondering if anyone else has seen this or has any advice as to how I should go about fixing it. I have to be able to run multiple tests at the same time.

10:56:10.480 ERROR - Exception running command\\ java.lang.RuntimeException: unexpected browser error from getTitle: ERROR: Got a null result\\ at org.openqa.selenium.server.FrameGroupCommandQueueSet.getRemoteString(FrameGroupCommandQueueSet.java:504)\\ at org.openqa.selenium.server.FrameGroupCommandQueueSet.getRemoteWindowTitle(FrameGroupCommandQueueSet.java:486)\\ at org.openqa.selenium.server.FrameGroupCommandQueueSet.matchesFrameAddress(FrameGroupCommandQueueSet.java:641)\\ at org.openqa.selenium.server.FrameGroupCommandQueueSet.findMatchingFrameAddress(FrameGroupCommandQueueSet.java:605)\\ at org.openqa.selenium.server.FrameGroupCommandQueueSet.waitForLoad(FrameGroupCommandQueueSet.java:536)\\ at org.openqa.selenium.server.FrameGroupCommandQueueSet.doCommand(FrameGroupCommandQueueSet.java:381)\\ at org.openqa.selenium.server.SeleniumDriverResourceHandler.doCommand(SeleniumDriverResourceHandler.java:537)\\ at org.openqa.selenium.server.SeleniumDriverResourceHandler.handleCommandRequest(SeleniumDriverResourceHandler.java:388)\\ at org.openqa.selenium.server.SeleniumDriverResourceHandler.handle(SeleniumDriverResourceHandler.java:135)\\ at org.mortbay.http.HttpContext.handle(HttpContext.java:1530)\\ at org.mortbay.http.HttpContext.handle(HttpContext.java:1482)\\ at org.mortbay.http.HttpServer.service(HttpServer.java:909)\\ at org.mortbay.http.HttpConnection.service(HttpConnection.java:816)\\ at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:982)\\ at org.mortbay.http.HttpConnection.handle(HttpConnection.java:833)\\ at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:244)\\ at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357)\\ at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)\\

[ansar313]

i have same problem too. can any one how can we correct this problem??

please help us