diff --git a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/MultiResourceInfo.java b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/MultiResourceInfo.java
index 376f41dd350..073afea74fa 100644
--- a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/MultiResourceInfo.java
+++ b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/MultiResourceInfo.java
@@ -38,9 +38,19 @@ public class MultiResourceInfo extends MultiItemsHolder implements
 	private static final int MODE_COMMAND  = 5;
 	
 	protected IResourceInfo[] fRis = null;
+	private int activeCfg = 0;
 	
 	public MultiResourceInfo(IResourceInfo[] ris) {
 		fRis = ris;
+		for (int i=0; i<fRis.length; i++) {
+			if (! (fRis[i].getParent() instanceof Configuration))
+				continue;
+			Configuration cfg = (Configuration)fRis[i].getParent();
+			if (cfg.getConfigurationDescription().isActive()) {
+				activeCfg = i;
+				break;
+			}
+		}
 	}
 	
 	/* (non-Javadoc)
@@ -57,28 +67,28 @@ public class MultiResourceInfo extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#getCLanguageDatas()
 	 */
 	public CLanguageData[] getCLanguageDatas() {
-		return fRis[0].getCLanguageDatas();
+		return fRis[activeCfg].getCLanguageDatas();
 	}
 
 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#getKind()
 	 */
 	public int getKind() {
-		return fRis[0].getKind();
+		return fRis[activeCfg].getKind();
 	}
 
 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#getParent()
 	 */
 	public IConfiguration getParent() {
-		return fRis[0].getParent();
+		return fRis[activeCfg].getParent();
 	}
 
 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#getPath()
 	 */
 	public IPath getPath() {
-		return fRis[0].getPath();
+		return fRis[activeCfg].getPath();
 	}
 
 	/* (non-Javadoc)
@@ -86,15 +96,14 @@ public class MultiResourceInfo extends MultiItemsHolder implements
 	 */
 	public CResourceData getResourceData() {
 		System.out.println("Strange call: MultiResourceInfo.getResourceData()"); //$NON-NLS-1$
-		return fRis[0].getResourceData();
+		return fRis[activeCfg].getResourceData();
 	}
 
 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#getTools()
 	 */
 	public ITool[] getTools() {
-		System.out.println("Strange call: MultiResourceInfo.getTools()"); //$NON-NLS-1$
-		return fRis[0].getTools();
+		return fRis[activeCfg].getTools();
 	}
 
 	/* (non-Javadoc)
@@ -295,42 +304,42 @@ public class MultiResourceInfo extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#supportsBuild(boolean)
 	 */
 	public boolean supportsBuild(boolean managed) {
-		return fRis[0].supportsBuild(managed);
+		return fRis[activeCfg].supportsBuild(managed);
 	}
 
 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.managedbuilder.core.IBuildObject#getBaseId()
 	 */
 	public String getBaseId() {
-		return fRis[0].getBaseId();
+		return fRis[activeCfg].getBaseId();
 	}
 
 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.managedbuilder.core.IBuildObject#getId()
 	 */
 	public String getId() {
-		return fRis[0].getId();
+		return fRis[activeCfg].getId();
 	}
 
 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.managedbuilder.core.IBuildObject#getManagedBuildRevision()
 	 */
 	public String getManagedBuildRevision() {
-		return fRis[0].getManagedBuildRevision();
+		return fRis[activeCfg].getManagedBuildRevision();
 	}
 
 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.managedbuilder.core.IBuildObject#getName()
 	 */
 	public String getName() {
-		return fRis[0].getName();
+		return fRis[activeCfg].getName();
 	}
 
 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.managedbuilder.core.IBuildObject#getVersion()
 	 */
 	public PluginVersionIdentifier getVersion() {
-		return fRis[0].getVersion();
+		return fRis[activeCfg].getVersion();
 	}
 
 	/* (non-Javadoc)
@@ -346,7 +355,7 @@ public class MultiResourceInfo extends MultiItemsHolder implements
 	}
 
 	public boolean isRoot() {
-		return ((ResourceInfo)fRis[0]).isRoot();
+		return ((ResourceInfo)fRis[activeCfg]).isRoot();
 	}
 
 }
diff --git a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/settings/model/MultiConfigDescription.java b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/settings/model/MultiConfigDescription.java
index 71f0ae39ec2..b9ae7e7ec74 100644
--- a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/settings/model/MultiConfigDescription.java
+++ b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/settings/model/MultiConfigDescription.java
@@ -11,6 +11,8 @@
 
 package org.eclipse.cdt.internal.core.settings.model;
 
+import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.Map;
 
@@ -165,8 +167,7 @@ public class MultiConfigDescription extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.core.settings.model.ICConfigurationDescription#getDescription()
 	 */
 	public String getDescription() {
-		System.out.println("Bad multi access: MultiConfigDescription.getDescription()");
-		return null;
+		return "Multi Configuration"; //$NON-NLS-1$
 	}
 
 	/* (non-Javadoc)
@@ -189,16 +190,20 @@ public class MultiConfigDescription extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.core.settings.model.ICConfigurationDescription#getFileDescriptions()
 	 */
 	public ICFileDescription[] getFileDescriptions() {
-		System.out.println("Bad multi access: MultiConfigDescription.getFileDescriptions()");
-		return null;
+		ArrayList<ICFileDescription> lst = new ArrayList<ICFileDescription>();
+		for (int i=0; i<fCfgs.length; i++) 
+			lst.addAll(Arrays.asList(fCfgs[i].getFileDescriptions()));
+		return (ICFileDescription[])lst.toArray(new ICFileDescription[lst.size()]);
 	}
 
 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.core.settings.model.ICConfigurationDescription#getFolderDescriptions()
 	 */
 	public ICFolderDescription[] getFolderDescriptions() {
-		System.out.println("Bad multi access: MultiConfigDescription.getFolderDescription()");
-		return null;
+		ArrayList<ICFolderDescription> lst = new ArrayList<ICFolderDescription>();
+		for (int i=0; i<fCfgs.length; i++) 
+			lst.addAll(Arrays.asList(fCfgs[i].getFolderDescriptions()));
+		return (ICFolderDescription[])lst.toArray(new ICFolderDescription[lst.size()]);
 	}
 
 	/* (non-Javadoc)
@@ -242,17 +247,38 @@ public class MultiConfigDescription extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.core.settings.model.ICConfigurationDescription#getResourceDescription(org.eclipse.core.runtime.IPath, boolean)
 	 */
 	public ICResourceDescription getResourceDescription(IPath path,
-			boolean exactPath) {
-		System.out.println("Bad multi access: MultiConfigDescription.getResourceDescription()");
-		return null;
+			boolean isForFolder) {
+		ArrayList<ICResourceDescription> lst = new ArrayList<ICResourceDescription>();
+		for (int i=0; i<fCfgs.length; i++) {
+			ICResourceDescription rd = fCfgs[i].getResourceDescription(path, false);
+			if (! path.equals(rd.getPath()) ) {
+				try {
+					if (isForFolder)
+						rd = fCfgs[i].createFolderDescription(path, (ICFolderDescription)rd);
+					else
+						rd = fCfgs[i].createFileDescription(path, rd);
+				} catch (CoreException e) {}
+			}
+			if (rd != null)
+				lst.add(rd);
+		}
+		if (lst.size() == 0)
+			return null;
+		if (lst.size() == 1)
+			return (ICResourceDescription)lst.get(0);
+		return new MultiResourceDescription(
+				(ICResourceDescription[])lst.toArray(new ICResourceDescription[lst.size()]),
+ 				 getStringListMode());
 	}
-
+	
 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.core.settings.model.ICConfigurationDescription#getResourceDescriptions()
 	 */
 	public ICResourceDescription[] getResourceDescriptions() {
-		System.out.println("Bad multi access: MultiConfigDescription.getResourceDescriptions()");
-		return null;
+		ArrayList<ICResourceDescription> lst = new ArrayList<ICResourceDescription>();
+		for (int i=0; i<fCfgs.length; i++) 
+			lst.addAll(Arrays.asList(fCfgs[i].getResourceDescriptions()));
+		return (ICResourceDescription[])lst.toArray(new ICResourceDescription[lst.size()]);
 	}
 
 	/* (non-Javadoc)
@@ -269,7 +295,7 @@ public class MultiConfigDescription extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.core.settings.model.ICConfigurationDescription#getSessionProperty(org.eclipse.core.runtime.QualifiedName)
 	 */
 	public Object getSessionProperty(QualifiedName name) {
-		System.out.println("Bad multi access: MultiConfigDescription.getSessionProperty()");
+		System.out.println("Bad multi access: MultiConfigDescription.getSessionProperty()"); //$NON-NLS-1$
 		throw new UnsupportedOperationException();
 	}
 
@@ -369,7 +395,7 @@ public class MultiConfigDescription extends MultiItemsHolder implements
 	 */
 	public void setConfigurationData(String buildSystemId,
 			CConfigurationData data) throws WriteAccessException {
-		System.out.println("Bad multi access: MultiConfigDescription.getConfigurationData()");
+		System.out.println("Bad multi access: MultiConfigDescription.getConfigurationData()"); //$NON-NLS-1$
 		throw new UnsupportedOperationException();
 	}
 
@@ -377,7 +403,7 @@ public class MultiConfigDescription extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.core.settings.model.ICConfigurationDescription#setDescription(java.lang.String)
 	 */
 	public void setDescription(String des) throws WriteAccessException {
-		System.out.println("Bad multi access: MultiConfigDescription.setDescription()");
+		System.out.println("Bad multi access: MultiConfigDescription.setDescription()"); //$NON-NLS-1$
 		throw new UnsupportedOperationException();
 	}
 
diff --git a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/settings/model/MultiResourceDescription.java b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/settings/model/MultiResourceDescription.java
index 7e45991941b..a9c44e52e27 100644
--- a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/settings/model/MultiResourceDescription.java
+++ b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/settings/model/MultiResourceDescription.java
@@ -62,9 +62,10 @@ public class MultiResourceDescription extends MultiItemsHolder implements ICMult
 	public IPath getPath() {
 		IPath p = fRess[0].getPath();
 		if (p != null) {
-			for (int i=1; i<fRess.length; i++)
+			for (int i=1; i<fRess.length; i++) {
 				if (!p.equals(fRess[i].getPath()))
 					throw new UnsupportedOperationException();
+			}
 			return p;
 		}
 		throw new UnsupportedOperationException();
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/AbstractPage.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/AbstractPage.java
index 514f0eb4313..13d3cd02d06 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/AbstractPage.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/AbstractPage.java
@@ -708,16 +708,20 @@ implements
 		IResource res = (IResource)ad; 
 		IPath p = res.getProjectRelativePath();
 		if (isForFolder() || isForFile()) {
-			out = cf.getResourceDescription(p, false);
-			if (! p.equals(out.getPath()) ) {
-				try {
-					if (isForFolder())
-						out = cf.createFolderDescription(p, (ICFolderDescription)out);
-					else
-						out = cf.createFileDescription(p, out);
-				} catch (CoreException e) {
-					System.out.println(UIMessages.getString("AbstractPage.10") + //$NON-NLS-1$
-							p.toOSString() + "\n" + e.getLocalizedMessage()); //$NON-NLS-1$
+			if (isMultiCfg()) {
+				out = cf.getResourceDescription(p, isForFolder()); // sic ! 
+			} else {
+				out = cf.getResourceDescription(p, false);
+				if (! p.equals(out.getPath()) ) {
+					try {
+						if (isForFolder())
+							out = cf.createFolderDescription(p, (ICFolderDescription)out);
+						else
+							out = cf.createFileDescription(p, out);
+					} catch (CoreException e) {
+						System.out.println(UIMessages.getString("AbstractPage.10") + //$NON-NLS-1$
+								p.toOSString() + "\n" + e.getLocalizedMessage()); //$NON-NLS-1$
+					}
 				}
 			}
 		}