I've noticed ${env.J2SE-1.5} is printed out to log during javadoc procedures, literally, which implies it should actually be ${J2SE-1.5}. So ... will try that. There may be an issue with local vs. production builds with this variable.
diff --git a/releng/maps/jst-doc.map b/releng/maps/jst-doc.map
index ec0f9f8..2779848 100644
--- a/releng/maps/jst-doc.map
+++ b/releng/maps/jst-doc.map
@@ -11,7 +11,7 @@
 
 !*************** ISV Docs
 
-plugin@org.eclipse.jst.doc.isv=v200712120931,:pserver:anonymous@dev.eclipse.org:/cvsroot/webtools,,webtools.releng/docs/org.eclipse.jst.doc.isv
+plugin@org.eclipse.jst.doc.isv=v200802110436,:pserver:anonymous@dev.eclipse.org:/cvsroot/webtools,,webtools.releng/docs/org.eclipse.jst.doc.isv
 
 !*************** Infopops
 
diff --git a/releng/maps/wst-doc.map b/releng/maps/wst-doc.map
index 61aaadd..345ac0e 100644
--- a/releng/maps/wst-doc.map
+++ b/releng/maps/wst-doc.map
@@ -22,7 +22,7 @@
 
 !*************** ISV Docs
 
-plugin@org.eclipse.wst.doc.isv=v200712120931,:pserver:anonymous@dev.eclipse.org:/cvsroot/webtools,,webtools.releng/docs/org.eclipse.wst.doc.isv
+plugin@org.eclipse.wst.doc.isv=v200802110436,:pserver:anonymous@dev.eclipse.org:/cvsroot/webtools,,webtools.releng/docs/org.eclipse.wst.doc.isv
 
 !*************** Infopops