diff --git a/OutlawEditor/pom.xml b/OutlawEditor/pom.xml
index 794cde50..1f5e7734 100644
--- a/OutlawEditor/pom.xml
+++ b/OutlawEditor/pom.xml
@@ -24,7 +24,7 @@
             <plugin>
                 <groupId>com.gluonhq</groupId>
                 <artifactId>gluonfx-maven-plugin</artifactId>
-                <version>1.0.19</version>
+                <version>1.0.24</version>
                 <configuration>
                     <mainClass>${mainClass}</mainClass>
                     <options>
@@ -56,12 +56,12 @@
                     <source>17</source>
                     <target>17</target>
                 </configuration>
-                <version>3.11.0</version>
+                <version>3.13.0</version>
             </plugin>
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>jaxb2-maven-plugin</artifactId>
-                <version>3.1.0</version>
+                <version>3.2.0</version>
                 <executions>
                     <execution>
                         <id>xjc</id>
@@ -78,7 +78,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-dependency-plugin</artifactId>
-                <version>3.6.0</version>
+                <version>3.8.1</version>
                 <executions>
                     <execution>
                         <id>copy-dependencies</id>
@@ -109,17 +109,17 @@
         <dependency>
             <groupId>jakarta.xml.bind</groupId>
             <artifactId>jakarta.xml.bind-api</artifactId>
-            <version>4.0.1</version>
+            <version>4.0.2</version>
         </dependency>
         <dependency>
             <groupId>org.glassfish.jaxb</groupId>
             <artifactId>jaxb-runtime</artifactId>
-            <version>4.0.3</version>
+            <version>4.0.5</version>
         </dependency>
         <dependency>
             <groupId>org.controlsfx</groupId>
             <artifactId>controlsfx</artifactId>
-            <version>11.2.0</version>
+            <version>11.2.1</version>
         </dependency>
         <dependency>
             <groupId>org.openjfx</groupId>
diff --git a/OutlawEditor/src/main/java/org/badvision/outlaweditor/ui/impl/SheetEditorControllerImpl.java b/OutlawEditor/src/main/java/org/badvision/outlaweditor/ui/impl/SheetEditorControllerImpl.java
index 2995ade1..670aa729 100644
--- a/OutlawEditor/src/main/java/org/badvision/outlaweditor/ui/impl/SheetEditorControllerImpl.java
+++ b/OutlawEditor/src/main/java/org/badvision/outlaweditor/ui/impl/SheetEditorControllerImpl.java
@@ -39,7 +39,7 @@ import org.badvision.outlaweditor.ui.SheetEditorController;
 import org.badvision.outlaweditor.ui.UIAction;
 import org.controlsfx.control.spreadsheet.GridBase;
 import org.controlsfx.control.spreadsheet.SpreadsheetCell;
-import org.controlsfx.control.spreadsheet.SpreadsheetCellBase;
+import org.controlsfx.control.spreadsheet.SpreadsheetCellType;
 
 import jakarta.xml.bind.JAXBException;
 import javafx.beans.value.ObservableValue;
@@ -70,6 +70,7 @@ public class SheetEditorControllerImpl extends SheetEditorController {
         super.initialize();
         tableData = table.getGrid().getRows();
         table.setEditable(true);
+        
         table.getContextMenu().getItems().addAll(
                 createMenuItem("Insert Row", () -> insertRow(new Row(), getSelectedRow())),
                 createMenuItem("Clone Row", () -> cloneRow(editor.getSheet().getRows().getRow().get(getSelectedRow()))),
@@ -153,11 +154,16 @@ public class SheetEditorControllerImpl extends SheetEditorController {
     public void addColumnAction(ActionEvent event) {
         String newColName = UIAction.getText("Enter new column name", "new");
         if (newColName != null && !newColName.isEmpty()) {
+            // If the column exists with that name, show an error instead
             UserType col = new UserType();
             col.setName(newColName);
             if (editor.getSheet().getColumns() == null) {
                 editor.getSheet().setColumns(new Columns());
+            } else if (editor.getSheet().getColumns().getColumn().stream().anyMatch(c -> c.getName().equals(newColName))) {
+                UIAction.alert("A column with that name already exists.  Please choose a different name.");
+                return;
             }
+
             insertColumn(col);
             rebuildGridUI();
         }
@@ -276,8 +282,7 @@ public class SheetEditorControllerImpl extends SheetEditorController {
                 tableData.add(rowUi);
                 for (UserType col : editor.getSheet().getColumns().getColumn()) {
                     String value = getValue(row.getOtherAttributes(), col.getName());
-                    SpreadsheetCellBase cell = new SpreadsheetCellBase(rowNum, colNum, 1, 1);
-                    cell.setItem(value);
+                    SpreadsheetCell cell =  SpreadsheetCellType.STRING.createCell(rowNum, colNum, 1, 1, value);
                     cell.itemProperty().addListener((ObservableValue<? extends Object> val, Object oldVal, Object newVal) -> {
                         setValue(row.getOtherAttributes(), col.getName(), String.valueOf(newVal));
                     });