Java Development Tools

hello, i have got a question thaht maybe is relationated with another post which the subject is equal.
I'm working with jdeveloper Studio Edition Version 11.1.1.1.0.
In the help, in 2 Introduction to the ADF Sample Application, i have problems in 2.3.2 How to Install the Fusion Order Demo Schema ion the step 8
I have got a error message:

BUILD FAILED
C:\FusionOrderDemo\Infrastructure\Ant\build.xml:52: The following error occurred while executing this line:
C:\FusionOrderDemo\Infrastructure\DBSchema\build.xml:91: The following error occurred while executing this line:
C:\FusionOrderDemo\Infrastructure\DBSchema\build.xml:56: The following error occurred while executing this line:
C:\FusionOrderDemo\Infrastructure\DBSchema\build.xml:28: C:\FusionOrderDemo\Infrastructure\Ant\wlserver_10.3\server\lib not found.

Total time: 8 seconds

I know that C:\FusionOrderDemo\Infrastructure\Ant\wlserver_10.3\server\lib not exist, because i go there and there isn't

that's seems rare for me because i downloaded from oracle page the zip folder.

the error points to : src="@{script}" onerror="@{onerror}"/>
Maybe is another problem?

thanks