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nb-Release3.3.1 - At install, first launch Could not install some modules: Open APIs Support with Ant - The module named org.netbeans.apisupport was needed and not found. Solution : Upgrade with Update Center. --> 3.3.1 Release should be bundle with the missing module now.
Nothing to do with installer.
Resolved for 3.4 or earlier, no new info since then -> closing.