There are various causes for ColdFusion MX to display "null, null" errors. One known issue is corruption of the ColdFusion cookies for cfid or cftoken. These cookies are used for session tracking internally in ColdFusion.
Macromedia issue 45343 identified this specific issue of corrupt or missing cfid/cftoken and was thought resolved with the release of ColdFusion MX 6.1. Additional variants of this issue have been identified since the release of ColdFusion MX 6.1 and ColdFusion MX 6.1 Updater 1. These additional variants have been fixed with the hot fix provided below.
There are other causes for the "null, null" error as well. The most typical issue is that cferror and/or a global site-wide error handler is being used and your application had a NullPointerException (NPE). The simplest way to diagnose this issue is to temporarily remove the cferror code or the site-wide error handler. The next time the error occurs, the underlying error will be shown rather than the "null, null" error.
Follow the instructions below to install the hot fix for ColdFusion MX 6.1 in the server configuration. For J2EE servers including JRun, use the instructions under the J2EE Configuration section.
Follow the instructions below to install the hot fix for ColdFusion MX 6.1 in the J2EE configuration with a J2EE server including JRun:
- Change the Context Parametercf.class.path
in the Deployment Descriptor (cf_root/WEB-INF/web.xml)
for the Web Application "Macromedia ColdFusion MX" (cfusion.war)
./WEB-INF/lib/hf45343_61.jar,./WEB-INF/cfusion/lib/cfusion.jar (ColdFusion MX 6.1)
./WEB-INF/lib/hf45343_611.jar,./WEB-INF/cfusion/lib/cfusion.jar (ColdFusion MX 6.1 Updater 1)
- Note that the two paths in cf.class.path each start with a period and are separated by a comma.
- Do not confuse ./WEB-INF/lib (which contains the hot fix jar file) with ./WEB-INF/cfusion/lib (which contains cfusion.jar).
- Examine the ColdFusion MX Administrator System Information page and confirm that hf45343_61.jar (ColdFusion MX 6.1) or hf45343_611.jar (ColdFusion MX 6.1 Updater 1) shows up in the Version section like 6,1,0 hf45343_61 or 6,1,0 hf45343_611. Note: You will not see this jar in the Java Class Path because the hot fix jar is being loaded in the Coldfusion Class Path.
- Deployment Descriptor Context Parameters can be changed using the J2EE Administrator Control Panel (WebLogic and JRun) or by using the Application Assembly Tool (Websphere). If your J2EE server does not have such a tool, you must make sure that the Context Parameter change is made for all deployed instances of ColdFusion. It may be necessary to un-deploy CFMX, make the change, then re-deploy CFMX. See your J2EE documentation for other methods.
- Be sure to Persist (WebLogic) or Save (Websphere) your changes after you change the value for cf.class.path.
- You will usually need to stop and restart your J2EE server to make these changes effective.