SRVE8094W: WARNING: Cannot set header. Response already committed - upgrading gwt/Spring application to WAS 8.5 - HELP!!!

Hi, 

I'm upgrading app server of somewhat old GWT 2.03/Spring 2 application from WAS 7.00 to WAS 8.5.5 and I'm getting the following error when I try to load that very first Login JSP:

[5/11/15 15:55:18:969 EDT] 0000010e ServletWrappe I com.ibm.ws.webcontainer.servlet.ServletWrapper init SRVE0242I: [RxHD_Ear] [/RxHD] [/rxhd_login.jsp]: Initialization successful.

[5/11/15 15:55:20:000 EDT] 0000010f SRTServletRes W com.ibm.ws.webcontainer.srt.SRTServletResponse setHeader SRVE8094W: WARNING: Cannot set header. Response already committed.

[5/11/15 15:55:20:005 EDT] 0000010e SRTServletRes W com.ibm.ws.webcontainer.srt.SRTServletResponse setHeader SRVE8094W: WARNING: Cannot set header. Response already committed.

The JSP that get's loaded doesn't contain any logic. It only renders some HTML content using couple of CSS classes.

This application runs fine on WAS 7 and we never had any problems upgrading from WAS 6 to WAS 7. I compared all settings in WAS 8.5.5 and WAS 7 and don't see any differences including the build path and Class Loader settings. 

Also, there are no other error messages or Stack trace anywhere in the logs. I also tried running the server with different versions of JVM and different modes of Class Loader like PARENT_FIST and PARENT_LAST.

Nothing seems to work so far.

I ran a trace on both versions of the WAS server and went over all logged messages. Even though there are some different messages being logged, I don't see anything alarming so far (output buffer size, output stream being committed). I can provide both trace files if needed.

Does anybody have any idea or experienced something similar by any chance???

Thanks in advance.

Paul.

--
You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group.
To unsubscribe from this group and stop receiving emails from it, send an email to google-web-toolkit+unsubscribe@googlegroups.com.
To post to this group, send email to google-web-toolkit@googlegroups.com.
Visit this group at http://groups.google.com/group/google-web-toolkit.
For more options, visit https://groups.google.com/d/optout.