Index: src/org/netbeans/spi/project/support/ant/SourcesHelper.java
===================================================================
RCS file: /cvs/ant/project/src/org/netbeans/spi/project/support/ant/SourcesHelper.java,v
retrieving revision 1.21
diff -u -r1.21 SourcesHelper.java
--- src/org/netbeans/spi/project/support/ant/SourcesHelper.java	9 Jul 2007 23:48:55 -0000	1.21
+++ src/org/netbeans/spi/project/support/ant/SourcesHelper.java	26 Sep 2007 13:14:19 -0000
@@ -490,21 +490,25 @@
         for (Root r : allRoots) {
             for (FileObject loc : r.getIncludeRoots()) {
                 if (!loc.isFolder()) {
-                    continue;
+                    if (!FileUtil.isArchiveFile(loc)) {
+                        continue;
+                    } 
                 }
                 if (FileUtil.getRelativePath(pdir, loc) != null) {
                     // Inside projdir already. Skip it.
                     continue;
                 }
-                try {
-                    Project other = ProjectManager.getDefault().findProject(loc);
-                    if (other != null) {
-                        // This is a foreign project; we cannot own it. Skip it.
+                if (loc.isFolder()) {
+                    try {
+                        Project other = ProjectManager.getDefault().findProject(loc);
+                        if (other != null) {
+                            // This is a foreign project; we cannot own it. Skip it.
+                            continue;
+                        }
+                    } catch (IOException e) {
+                        // Assume it is a foreign project and skip it.
                         continue;
                     }
-                } catch (IOException e) {
-                    // Assume it is a foreign project and skip it.
-                    continue;
                 }
                 // It's OK to go.
                 newRegisteredRoots.add(loc);