cd C:\Sun\gfv4trunk\gfv4trunk\main; "JAVA_HOME=C:\\Program Files\\Java\\jdk1.7.0_11" "\"C:\\Program Files\\NetBeans 7.3\\java\\maven\\bin\\mvn.bat\"" -DskipTests=true --update-snapshots -U install

C:\Sun\gfv4trunk\gfv4trunk\main>set MAVEN_OPTS=-Xmx2048m -XX:MaxPermSize=768m 
Scanning for projects...
Downloading: http://repo1.maven.org/maven2/org/glassfish/hk2/hk2-bom/2.2.0-b04/hk2-bom-2.2.0-b04.pom

The build could not read 2 projects -> [Help 1]
  
  The project org.glassfish.main:glassfish-nucleus-parent:4.0.1-SNAPSHOT (C:\Sun\gfv4trunk\gfv4trunk\main\nucleus\pom.xml) has 1 error
    Non-resolvable import POM: Could not find artifact org.glassfish.hk2:hk2-bom:pom:2.2.0-b04 in maven-central (http://repo1.maven.org/maven2/) @ line 619, column 25 -> [Help 2]
  
  The project org.glassfish.main:glassfish-parent:4.0.1-SNAPSHOT (C:\Sun\gfv4trunk\gfv4trunk\main\appserver\pom.xml) has 1 error
    Non-resolvable import POM: Failure to find org.glassfish.hk2:hk2-bom:pom:2.2.0-b04 in http://repo1.maven.org/maven2/ was cached in the local repository, resolution will not be reattempted until the update interval of maven-central has elapsed or updates are forced @ org.glassfish.main:glassfish-nucleus-parent:4.0.1-SNAPSHOT, C:\Sun\gfv4trunk\gfv4trunk\main\nucleus\pom.xml, line 619, column 25 -> [Help 2]

To see the full stack trace of the errors, re-run Maven with the -e switch.
Re-run Maven using the -X switch to enable full debug logging.

For more information about the errors and possible solutions, please read the following articles:
[Help 1] http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildingException
[Help 2] http://cwiki.apache.org/confluence/display/MAVEN/UnresolvableModelException