diff --git a/app/src/processing/app/Base.java b/app/src/processing/app/Base.java
index 5760b3748..965d42faa 100644
--- a/app/src/processing/app/Base.java
+++ b/app/src/processing/app/Base.java
@@ -1652,7 +1652,7 @@ public class Base {
     // if a .pde file of the same prefix as the folder exists..
     if (entry.exists()) {
 
-      if (!Sketch.isSanitaryName(name)) {
+      if (!BaseNoGui.isSanitaryName(name)) {
         if (!builtOnce) {
           String complaining = I18n
               .format(
@@ -2725,7 +2725,7 @@ public class Base {
       // is there a valid library?
       File libFolder = sourceFile;
       String libName = libFolder.getName();
-      if (!Sketch.isSanitaryName(libName)) {
+      if (!BaseNoGui.isSanitaryName(libName)) {
         String mess = I18n.format(_("The library \"{0}\" cannot be used.\n"
             + "Library names must contain only basic letters and numbers.\n"
             + "(ASCII only and no spaces, and it cannot start with a number)"),
diff --git a/app/src/processing/app/BaseNoGui.java b/app/src/processing/app/BaseNoGui.java
index 9e420503b..ddf1b1d89 100644
--- a/app/src/processing/app/BaseNoGui.java
+++ b/app/src/processing/app/BaseNoGui.java
@@ -315,6 +315,13 @@ public class BaseNoGui {
     PreferencesData.set("last.ide." + VERSION_NAME + ".daterun", "" + (new Date()).getTime() / 1000);
   }
 
+  /**
+   * Return true if the name is valid for a Processing sketch.
+   */
+  static public boolean isSanitaryName(String name) {
+    return sanitizeName(name).equals(name);
+  }
+
   static protected void loadHardware(File folder) {
     if (!folder.isDirectory()) return;
 
@@ -405,7 +412,7 @@ public class BaseNoGui {
       if (files[i].equals(".") || files[i].equals("..")) continue;
       File dead = new File(dir, files[i]);
       if (!dead.isDirectory()) {
-        if (!Preferences.getBoolean("compiler.save_build_files")) {
+        if (!PreferencesData.getBoolean("compiler.save_build_files")) {
           if (!dead.delete()) {
             // temporarily disabled
         System.err.println(I18n.format(_("Could not delete {0}"), dead));
@@ -430,6 +437,50 @@ public class BaseNoGui {
     }
   }
 
+  /**
+   * Produce a sanitized name that fits our standards for likely to work.
+   * <p/>
+   * Java classes have a wider range of names that are technically allowed
+   * (supposedly any Unicode name) than what we support. The reason for
+   * going more narrow is to avoid situations with text encodings and
+   * converting during the process of moving files between operating
+   * systems, i.e. uploading from a Windows machine to a Linux server,
+   * or reading a FAT32 partition in OS X and using a thumb drive.
+   * <p/>
+   * This helper function replaces everything but A-Z, a-z, and 0-9 with
+   * underscores. Also disallows starting the sketch name with a digit.
+   */
+  static public String sanitizeName(String origName) {
+    char c[] = origName.toCharArray();
+    StringBuffer buffer = new StringBuffer();
+
+    // can't lead with a digit, so start with an underscore
+    if ((c[0] >= '0') && (c[0] <= '9')) {
+      buffer.append('_');
+    }
+    for (int i = 0; i < c.length; i++) {
+      if (((c[i] >= '0') && (c[i] <= '9')) ||
+          ((c[i] >= 'a') && (c[i] <= 'z')) ||
+          ((c[i] >= 'A') && (c[i] <= 'Z')) ||
+          ((i > 0) && (c[i] == '-')) ||
+          ((i > 0) && (c[i] == '.'))) {
+        buffer.append(c[i]);
+      } else {
+        buffer.append('_');
+      }
+    }
+    // let's not be ridiculous about the length of filenames.
+    // in fact, Mac OS 9 can handle 255 chars, though it can't really
+    // deal with filenames longer than 31 chars in the Finder.
+    // but limiting to that for sketches would mean setting the
+    // upper-bound on the character limit here to 25 characters
+    // (to handle the base name + ".class")
+    if (buffer.length() > 63) {
+      buffer.setLength(63);
+    }
+    return buffer.toString();
+  }
+
   /**
    * Spew the contents of a String object out to a file.
    */
@@ -475,7 +526,7 @@ public class BaseNoGui {
 
     for (String libName : list) {
       File subfolder = new File(folder, libName);
-      if (!Sketch.isSanitaryName(libName)) {
+      if (!isSanitaryName(libName)) {
         String mess = I18n.format(_("The library \"{0}\" cannot be used.\n"
             + "Library names must contain only basic letters and numbers.\n"
             + "(ASCII only and no spaces, and it cannot start with a number)"),
diff --git a/app/src/processing/app/Sketch.java b/app/src/processing/app/Sketch.java
index 11068a2a7..92d37aa54 100644
--- a/app/src/processing/app/Sketch.java
+++ b/app/src/processing/app/Sketch.java
@@ -239,7 +239,7 @@ public class Sketch {
     // make sure the user didn't name things poo.time.pde
     // or something like that (nothing against poo time)
     String shortName = newName.substring(0, dot);
-    String sanitaryName = Sketch.sanitizeName(shortName);
+    String sanitaryName = BaseNoGui.sanitizeName(shortName);
     if (!shortName.equals(sanitaryName)) {
       newName = sanitaryName + "." + newExtension;
     }
@@ -1465,7 +1465,7 @@ public class Sketch {
    * if changes were made.
    */
   static public String checkName(String origName) {
-    String newName = sanitizeName(origName);
+    String newName = BaseNoGui.sanitizeName(origName);
 
     if (!newName.equals(origName)) {
       String msg =
@@ -1478,55 +1478,4 @@ public class Sketch {
   }
 
 
-  /**
-   * Return true if the name is valid for a Processing sketch.
-   */
-  static public boolean isSanitaryName(String name) {
-    return sanitizeName(name).equals(name);
-  }
-
-
-  /**
-   * Produce a sanitized name that fits our standards for likely to work.
-   * <p/>
-   * Java classes have a wider range of names that are technically allowed
-   * (supposedly any Unicode name) than what we support. The reason for
-   * going more narrow is to avoid situations with text encodings and
-   * converting during the process of moving files between operating
-   * systems, i.e. uploading from a Windows machine to a Linux server,
-   * or reading a FAT32 partition in OS X and using a thumb drive.
-   * <p/>
-   * This helper function replaces everything but A-Z, a-z, and 0-9 with
-   * underscores. Also disallows starting the sketch name with a digit.
-   */
-  static public String sanitizeName(String origName) {
-    char c[] = origName.toCharArray();
-    StringBuffer buffer = new StringBuffer();
-
-    // can't lead with a digit, so start with an underscore
-    if ((c[0] >= '0') && (c[0] <= '9')) {
-      buffer.append('_');
-    }
-    for (int i = 0; i < c.length; i++) {
-      if (((c[i] >= '0') && (c[i] <= '9')) ||
-          ((c[i] >= 'a') && (c[i] <= 'z')) ||
-          ((c[i] >= 'A') && (c[i] <= 'Z')) ||
-          ((i > 0) && (c[i] == '-')) ||
-          ((i > 0) && (c[i] == '.'))) {
-        buffer.append(c[i]);
-      } else {
-        buffer.append('_');
-      }
-    }
-    // let's not be ridiculous about the length of filenames.
-    // in fact, Mac OS 9 can handle 255 chars, though it can't really
-    // deal with filenames longer than 31 chars in the Finder.
-    // but limiting to that for sketches would mean setting the
-    // upper-bound on the character limit here to 25 characters
-    // (to handle the base name + ".class")
-    if (buffer.length() > 63) {
-      buffer.setLength(63);
-    }
-    return buffer.toString();
-  }
 }
diff --git a/app/src/processing/app/SketchData.java b/app/src/processing/app/SketchData.java
index 948613a6e..f2bb8983e 100644
--- a/app/src/processing/app/SketchData.java
+++ b/app/src/processing/app/SketchData.java
@@ -122,7 +122,7 @@ public class SketchData {
 
           // Don't allow people to use files with invalid names, since on load,
           // it would be otherwise possible to sneak in nasty filenames. [0116]
-          if (Sketch.isSanitaryName(base)) {
+          if (BaseNoGui.isSanitaryName(base)) {
             addCode(new SketchCodeDocument(new File(folder, filename)));
           } else {
             System.err.println(I18n.format("File name {0} is invalid: ignored", filename));