diff --git a/extensions/freebase/module/MOD-INF/module.properties b/extensions/freebase/module/MOD-INF/module.properties
index fa86dc45f..56a95acc5 100644
--- a/extensions/freebase/module/MOD-INF/module.properties
+++ b/extensions/freebase/module/MOD-INF/module.properties
@@ -1,4 +1,4 @@
-name = freebase-extension
+name = freebase
 description = Google Refine Freebase Extension
 templating = false
 requires = core
diff --git a/extensions/freebase/module/scripts/dialogs/extend-data-preview-dialog.js b/extensions/freebase/module/scripts/dialogs/extend-data-preview-dialog.js
index e92565e65..43b574f10 100644
--- a/extensions/freebase/module/scripts/dialogs/extend-data-preview-dialog.js
+++ b/extensions/freebase/module/scripts/dialogs/extend-data-preview-dialog.js
@@ -6,7 +6,7 @@ function ExtendDataPreviewDialog(column, columnIndex, rowIndices, onDone) {
     this._extension = { properties: [] };
 
     var self = this;
-    this._dialog = $(DOM.loadHTML("freebase-extension", "scripts/dialogs/extend-data-preview-dialog.html"));
+    this._dialog = $(DOM.loadHTML("freebase", "scripts/dialogs/extend-data-preview-dialog.html"));
     this._elmts = DOM.bind(this._dialog);
     this._elmts.dialogHeader.text("Add Columns from Freebase Based on Column " + column.name);
     this._elmts.resetButton.click(function() {
@@ -135,7 +135,7 @@ ExtendDataPreviewDialog.prototype._update = function() {
     };
     
     $.post(
-        "/command/freebase-extension/preview-extend-data?" + $.param(params), 
+        "/command/freebase/preview-extend-data?" + $.param(params), 
         {
             rowIndices: JSON.stringify(this._rowIndices),
             extension: JSON.stringify(this._extension)
diff --git a/extensions/freebase/module/scripts/dialogs/freebase-loading-dialog.js b/extensions/freebase/module/scripts/dialogs/freebase-loading-dialog.js
index cf9e885e4..8e2e29aad 100644
--- a/extensions/freebase/module/scripts/dialogs/freebase-loading-dialog.js
+++ b/extensions/freebase/module/scripts/dialogs/freebase-loading-dialog.js
@@ -5,7 +5,7 @@ function FreebaseLoadingDialog() {
 
 FreebaseLoadingDialog.prototype._createDialog = function() {
     var self = this;
-    var dialog = $(DOM.loadHTML("freebase-extension", "scripts/dialogs/freebase-loading-dialog.html"));
+    var dialog = $(DOM.loadHTML("freebase", "scripts/dialogs/freebase-loading-dialog.html"));
     this._elmts = DOM.bind(dialog);
     this._elmts.cancelButton.click(function() { self._dismiss(); });
     
@@ -14,7 +14,7 @@ FreebaseLoadingDialog.prototype._createDialog = function() {
     var loadButton = this._elmts.loadButton;
     
     var check_authorization = function(cont) {
-        $.get("/command/freebase-extension/check-authorization/" + provider, function(data) {
+        $.get("/command/freebase/check-authorization/" + provider, function(data) {
             if ("status" in data && data.code == "/api/status/ok") {
                 authorization.html('Signed in as: <a target="_new" href="http://www.freebase.com/view/user/' + data.username + '">' + data.username + '</a> | <a href="javascript:{}" bind="signout">Sign Out</a>').show();
                 DOM.bind(authorization).signout.click(function() {
@@ -50,7 +50,7 @@ FreebaseLoadingDialog.prototype._createDialog = function() {
             "guid":   null
         }];
 
-        $.post("/command/freebase-extension/mqlwrite/" + provider, 
+        $.post("/command/freebase/mqlwrite/" + provider, 
             { "query" : JSON.stringify(mql_query) }, 
             function(data) {
                 if ("status" in data && data.code == "/api/status/ok") {
@@ -66,7 +66,7 @@ FreebaseLoadingDialog.prototype._createDialog = function() {
     
     var show_triples = function(cont) {
         $.post(
-            "/command/freebase-extension/preview-protograph?" + $.param({ project: theProject.id }),
+            "/command/freebase/preview-protograph?" + $.param({ project: theProject.id }),
             {
                 protograph: JSON.stringify(theProject.overlayModels.freebaseProtograph || {}),
                 engine: JSON.stringify(ui.browsingEngine.getJSON())
@@ -143,7 +143,7 @@ FreebaseLoadingDialog.prototype._load = function() {
     var doLoad = function() {
         var dismissBusy = DialogSystem.showBusy();
         
-        $.post("/command/freebase-extension/upload-data", 
+        $.post("/command/freebase/upload-data", 
             {
                 project: theProject.id, 
                 "qa" : qa,
diff --git a/extensions/freebase/module/scripts/dialogs/schema-alignment/dialog.js b/extensions/freebase/module/scripts/dialogs/schema-alignment/dialog.js
index ebb585bfb..f32a4c979 100644
--- a/extensions/freebase/module/scripts/dialogs/schema-alignment/dialog.js
+++ b/extensions/freebase/module/scripts/dialogs/schema-alignment/dialog.js
@@ -170,7 +170,7 @@ SchemaAlignmentDialog.prototype._constructFooter = function(footer) {
         var protograph = self.getJSON();
         
         Refine.postProcess(
-            "freebase-extension",
+            "freebase",
             "save-protograph",
             {},
             { protograph: JSON.stringify(protograph) },
@@ -264,7 +264,7 @@ SchemaAlignmentDialog.prototype.preview = function() {
     
     var protograph = this.getJSON();
     $.post(
-        "/command/freebase-extension/preview-protograph?" + $.param({ project: theProject.id }),
+        "/command/freebase/preview-protograph?" + $.param({ project: theProject.id }),
         { protograph: JSON.stringify(protograph), engine: JSON.stringify(ui.browsingEngine.getJSON()) },
         function(data) {
             if ("mqllike" in data) {
diff --git a/extensions/freebase/src/com/google/refine/freebase/operations/SaveProtographOperation.java b/extensions/freebase/src/com/google/refine/freebase/operations/SaveProtographOperation.java
index 5b7a41f0d..2b104129c 100644
--- a/extensions/freebase/src/com/google/refine/freebase/operations/SaveProtographOperation.java
+++ b/extensions/freebase/src/com/google/refine/freebase/operations/SaveProtographOperation.java
@@ -36,12 +36,12 @@ public class SaveProtographOperation extends AbstractOperation {
     
         writer.object();
         writer.key("op"); writer.value(OperationRegistry.s_opClassToName.get(this.getClass()));
-        writer.key("description"); writer.value(getBriefDescription());
+        writer.key("description"); writer.value(getBriefDescription(null));
         writer.key("protograph"); _protograph.write(writer, options);
         writer.endObject();
     }
 
-    protected String getBriefDescription() {
+    protected String getBriefDescription(Project project) {
         return "Save schema alignment skeleton";
     }
 
@@ -49,7 +49,7 @@ public class SaveProtographOperation extends AbstractOperation {
     protected HistoryEntry createHistoryEntry(Project project, long historyEntryID) throws Exception {
         Change change = new ProtographChange(_protograph);
         
-        return new HistoryEntry(historyEntryID, project, getBriefDescription(), SaveProtographOperation.this, change);
+        return new HistoryEntry(historyEntryID, project, getBriefDescription(project), SaveProtographOperation.this, change);
     }
     
     static public class ProtographChange implements Change {
diff --git a/extensions/freebase/src/com/google/refine/freebase/protograph/transpose/TripleLoaderTransposedNodeFactory.java b/extensions/freebase/src/com/google/refine/freebase/protograph/transpose/TripleLoaderTransposedNodeFactory.java
index 748e15c13..5a9aa107c 100644
--- a/extensions/freebase/src/com/google/refine/freebase/protograph/transpose/TripleLoaderTransposedNodeFactory.java
+++ b/extensions/freebase/src/com/google/refine/freebase/protograph/transpose/TripleLoaderTransposedNodeFactory.java
@@ -195,7 +195,7 @@ public class TripleLoaderTransposedNodeFactory implements TransposedNodeFactory
             sb.append("{ \"s\" : \""); sb.append(subject); sb.append('"');
             sb.append(", \"p\" : \""); sb.append(predicate); sb.append('"');
             sb.append(", \"o\" : "); sb.append(s);
-            sb.append(", \"lang\" : "); sb.append(lang);
+            sb.append(", \"lang\" : \""); sb.append(lang); sb.append('"');
                     
             if (subjectCell != null) {
                 sb.append(", \"meta\" : { ");
@@ -409,18 +409,25 @@ public class TripleLoaderTransposedNodeFactory implements TransposedNodeFactory
         }
         
         public Object internalWrite(String subject, String predicate, Project project, int subjectRowIndex, int subjectCellIndex, Cell subjectCell) {
-            if (subject != null) {
-                if ("/type/text".equals(node.lang)) {
-                    writeLine(subject, predicate, cell.value, node.lang, project, 
-                            subjectRowIndex, subjectCellIndex, subjectCell, !load);
+            Object value = cell.value;
+            if (value != null) {
+                if ("/type/text".equals(node.valueType)) {
+                    value = value.toString();
+                    if (subject != null) {
+                        writeLine(subject, predicate, value, node.lang, project, 
+                                subjectRowIndex, subjectCellIndex, subjectCell, !load);
+                    }
                 } else {
-                    writeLine(subject, predicate, cell.value, project, 
-                            subjectRowIndex, subjectCellIndex, subjectCell, 
-                            -1, -1, null, !load);
+                    value = validateValue(value, node.valueType);
+                    if (subject != null && value != null) {
+                        writeLine(subject, predicate, value, project, 
+                                subjectRowIndex, subjectCellIndex, subjectCell, 
+                                -1, -1, null, !load);
+                    }
                 }
             }
             
-            return cell.value;
+            return value;
         }
     }
     
@@ -472,16 +479,24 @@ public class TripleLoaderTransposedNodeFactory implements TransposedNodeFactory
         }
 
         public Object internalWrite(String subject, String predicate, Project project, int subjectRowIndex, int subjectCellIndex, Cell subjectCell) {
-            if ("/type/text".equals(node.lang)) {
-                writeLine(subject, predicate, node.value, node.lang, project,
-                    subjectRowIndex, subjectCellIndex, subjectCell, !load);
-            } else {
-                writeLine(subject, predicate, node.value, project, 
-                    subjectRowIndex, subjectCellIndex, subjectCell, 
-                    -1, -1, null, !load);
+            Object value = node.value;
+            if (value != null) {
+                if ("/type/text".equals(node.valueType)) {
+                    value = value.toString();
+                    if (subject != null) {
+                        writeLine(subject, predicate, value, node.lang, project,
+                            subjectRowIndex, subjectCellIndex, subjectCell, !load);
+                    }
+                } else {
+                    value = validateValue(value, node.valueType);
+                    if (subject != null && value != null) {
+                        writeLine(subject, predicate, value, project, 
+                            subjectRowIndex, subjectCellIndex, subjectCell, 
+                            -1, -1, null, !load);
+                    }
+                }
             }
-            
-            return node.value;
+            return value;
         }
     }
     
@@ -722,4 +737,48 @@ public class TripleLoaderTransposedNodeFactory implements TransposedNodeFactory
             writeLine(sb.toString());
         }
     }
+    
+    static protected Object validateValue(Object value, String valueType) {
+        if ("/type/datetime".equals(valueType)) {
+            if (!(value instanceof String)) {
+                value = value.toString();
+            }
+        } else if ("/type/boolean".equals(valueType)) {
+            if (!(value instanceof Boolean)) {
+                value = Boolean.parseBoolean(value.toString());
+            }
+        } else if ("/type/int".equals(valueType)) {
+            if (value instanceof Number) {
+                value = ((Number) value).longValue();
+            } else {
+                try {
+                    value = Long.parseLong(value.toString());
+                } catch (NumberFormatException e) {
+                    value = null;
+                }
+            }
+        } else if ("/type/float".equals(valueType)) {
+            if (value instanceof Number) {
+                value = ((Number) value).floatValue();
+            } else {
+                try {
+                    value = Float.parseFloat(value.toString());
+                } catch (NumberFormatException e) {
+                    value = null;
+                }
+            }
+        } else if ("/type/double".equals(valueType)) {
+            if (value instanceof Number) {
+                value = ((Number) value).doubleValue();
+            } else {
+                try {
+                    value = Double.parseDouble(value.toString());
+                } catch (NumberFormatException e) {
+                    value = null;
+                }
+            }
+        }
+        
+        return value;
+    }
 }