After NetBeans 4.0 beta2 build 200409220845 
Generated my project, it also generated the 
build-impl.xml file (as expected).

When clicking rebuild (or build) from the 
project, an error occures during the building 
process. 

The code compiles fine but the actual building 
of the 'jar' file in dist fails. (Compiling 
using java 1.5)

The error is in the "j2seproject" tag.

build-impl.xml:511: The 
<http://www.netbeans.org/ns/j2se-project/1:jar> 
type doesn't support the "name" attribute.
BUILD FAILED (total time: 5 seconds)

Removing the "Name" attribute from the tag 
results in another error.  

"Manifest is invalid: Manifest sections should 
start with a "Name" attribute and not "X-
COMMENT""


Here is the appropriate XML section that fails 
(the second tag is the erroneous one, 
j2seproject)


    <target name="-do-jar-with-mainclass" 
depends="init,compile,-pre-pre-jar,-pre-jar" 
if="manifest.available+main.class">
        <j2seproject:jar Name="MyProject.jar" 
manifest="${manifest.file}" 
xmlns:j2seproject="http://www.netbeans.org/ns/j2s
e-project/1">
            <manifest 
xmlns="http://www.netbeans.org/ns/j2se-
project/1">
                <attribute 
j2seproject:name="Main-Class" 
value="${main.class}"/>
            </manifest>
        </j2seproject:jar>
    </target>