It is not possible to debug web application. To reproduce:

- create web application on glassfish server (NPE is already reported as issue 115395)
- start debugger (F5). It starts application server but in spite that it writes:

debug:
The Sun Java System Application Server could not start.
More information about the cause is in the Server log file.
Possible reasons include:
 - IDE timeout: refresh the server node to see if it's running now.
 - Port conflicts. (use netstat -a to detect possible port numbers already used by the operating system.) 
 - Incorrect server configuration (domain.xml to be corrected manually) 
 - Corrupted Deployed Applications preventing the server to start.(This can be seen in the server.log file. In this
case, domain.xml needs to be modified).
 - Invalid installation location.
D:\Development\builds\nbUserdir-20070913083613\WebApplication1\nbproject\build-impl.xml:609: Deployment error:
The Sun Java System Application Server could not start.
More information about the cause is in the Server log file.
Possible reasons include:
 - IDE timeout: refresh the server node to see if it's running now.
 - Port conflicts. (use netstat -a to detect possible port numbers already used by the operating system.) 
 - Incorrect server configuration (domain.xml to be corrected manually) 
 - Corrupted Deployed Applications preventing the server to start.(This can be seen in the server.log file. In this
case, domain.xml needs to be modified).
 - Invalid installation location.
See the server log for details.
BUILD FAILED (total time: 24 seconds)


Build 200709130354, Java: 1.6.0_03-b02.