diff --git a/debugger.jpda.projects/nbproject/project.xml b/debugger.jpda.projects/nbproject/project.xml
--- a/debugger.jpda.projects/nbproject/project.xml
+++ b/debugger.jpda.projects/nbproject/project.xml
@@ -159,6 +159,15 @@
                     </run-dependency>
                 </dependency>
                 <dependency>
+                    <code-name-base>org.netbeans.modules.project.ant</code-name-base>
+                    <build-prerequisite/>
+                    <compile-dependency/>
+                    <run-dependency>
+                        <release-version>1</release-version>
+                        <specification-version>1.35</specification-version>
+                    </run-dependency>
+                </dependency>
+                <dependency>
                     <code-name-base>org.netbeans.modules.projectapi</code-name-base>
                     <build-prerequisite/>
                     <compile-dependency/>
diff --git a/debugger.jpda.projects/src/org/netbeans/modules/debugger/jpda/projects/SourcePathProviderImpl.java b/debugger.jpda.projects/src/org/netbeans/modules/debugger/jpda/projects/SourcePathProviderImpl.java
--- a/debugger.jpda.projects/src/org/netbeans/modules/debugger/jpda/projects/SourcePathProviderImpl.java
+++ b/debugger.jpda.projects/src/org/netbeans/modules/debugger/jpda/projects/SourcePathProviderImpl.java
@@ -88,6 +88,7 @@
 import org.netbeans.api.project.ui.OpenProjects;
 import org.netbeans.spi.java.classpath.support.ClassPathSupport;
 
+import org.netbeans.spi.project.support.ant.PropertyUtils;
 import org.openide.filesystems.FileObject;
 import org.openide.filesystems.FileStateInvalidException;
 import org.openide.filesystems.FileUtil;
@@ -219,12 +220,13 @@
             if (listeningCP != null) {
                 for (String cp : listeningCP.split(File.pathSeparator)) {
                     logger.log(Level.FINE, "Listening cp = '" + cp + "'");
-                    File f = new File(cp);
+                    File f = PropertyUtils.resolveFile(baseDir, cp);
                     f = FileUtil.normalizeFile(f);
                     URL entry = FileUtil.urlForArchiveOrDir(f);
 
                     if (entry != null) {
-                        srcRootsToListenForArtifactsUpdates = new HashSet<FileObject>();
+                        if (srcRootsToListenForArtifactsUpdates == null)
+                            srcRootsToListenForArtifactsUpdates = new HashSet<FileObject>();
                         for (FileObject src : SourceForBinaryQuery.findSourceRoots(entry).getRoots()) {
                             srcRootsToListenForArtifactsUpdates.add(src);
                         }