error while building project: during creation of system.h file

[Altera_Forum]

hi everyone, 

 am trying to run some software demo files on nios ii, am getting following error messege when i try to build project.   make -s all includes  Creating generated_app.mk... Creating system.h... Apr 28, 2011 1:54:06 PM - (SEVERE) generate: java.lang.IllegalStateException: java.lang.IllegalStateException: java.lang.NumberFormatException: empty String make[1]: *** [system_description/../obj/system.h-t] Error 1 make: *** [system_project] Error 2 Build completed in 94.297 seconds   if anyone know why this is happening pls help me. . .   thank you. . .

[Altera_Forum]

clean the project and rebuild.

[Altera_Forum]

i tried but no use . . .:( 

 if the system built is not correct then will this problem results. . .???   thank you

[Altera_Forum]

Hey, 

 Did you find a solution to your problem? I'm getting the same error on a project of mine...

[Altera_Forum]

Hey  

 Clean the project and rebuild it..Dont forget to clean the .metadata..Everything and then build again.I guess this is the problem of the tool.I face it many times but there is no explanation of it and is the only solution.After 4 or 5 times u will get it working for sure..And if you are a Windows user keep in mind to shut down it atleast once in a day.It may also be a problem.

[Altera_Forum]

If problem persists, consider recreating project from scratch.