diff --git a/ChangeLog b/ChangeLog
index 4bc7758a..d7b158e6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2018-12-28 (0.12.15)
+	Fix crash when using GOTO with a non-existent label
+	Fix crash in editor when double tapping empty document
+	Fix menu display on chromebook and other devices
+
 2018-11-11 (0.12.14)
 	CONSOLE: added support for IMAGE command
 
diff --git a/configure.ac b/configure.ac
index f9af3299..af504e20 100644
--- a/configure.ac
+++ b/configure.ac
@@ -7,7 +7,7 @@ dnl This program is distributed under the terms of the GPL v2.0
 dnl Download the GNU Public License (GPL) from www.gnu.org
 dnl
 
-AC_INIT([smallbasic], [0.12.14])
+AC_INIT([smallbasic], [0.12.15])
 AC_CONFIG_SRCDIR([configure.ac])
 
 AC_CANONICAL_TARGET
diff --git a/debian/changelog b/debian/changelog
index a2711668..259597e6 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,8 @@
+smallbasic (0.12.15) unstable; urgency=low
+  * Various see web site
+
+ -- Chris Warren-Smith <cwarrensmith@gmail.com>  Fri, 28 Dec 2018 09:45:25 +1000
+
 smallbasic (0.12.14) unstable; urgency=low
   * Various see web site
 
diff --git a/samples/distro-examples/tests/goto.bas b/samples/distro-examples/tests/goto.bas
new file mode 100644
index 00000000..73644546
--- /dev/null
+++ b/samples/distro-examples/tests/goto.bas
@@ -0,0 +1,2 @@
+REM Don't crash when label does not exist
+goto 1
diff --git a/samples/distro-examples/tests/output/goto.out b/samples/distro-examples/tests/output/goto.out
new file mode 100644
index 00000000..63d021d2
--- /dev/null
+++ b/samples/distro-examples/tests/output/goto.out
@@ -0,0 +1,6 @@
+
+
+ * COMP-ERROR AT Main:2 * 
+Description:
+Label '1' is not defined
+
diff --git a/src/common/scan.c b/src/common/scan.c
index 63e1cbd5..16776038 100644
--- a/src/common/scan.c
+++ b/src/common/scan.c
@@ -3401,7 +3401,7 @@ void comp_pass2_scan() {
         w = label->ip;
 
         // adjust the address to compensate for optimisation to remove adjoining kwEOC
-        if (comp_prog.ptr[w] != kwTYPE_LINE && comp_prog.ptr[w - 1] == kwTYPE_LINE) {
+        if (w > 0 && w < comp_prog.count && comp_prog.ptr[w] != kwTYPE_LINE && comp_prog.ptr[w - 1] == kwTYPE_LINE) {
           w--;
         }
         memcpy(comp_prog.ptr + node->pos + (j * ADDRSZ) + (ADDRSZ + ADDRSZ + 3), &w, ADDRSZ);
@@ -3419,7 +3419,7 @@ void comp_pass2_scan() {
         w = label->ip;
 
         // adjust the address to compensate for optimisation to remove adjoining kwEOC
-        if (comp_prog.ptr[w] != kwTYPE_LINE && comp_prog.ptr[w - 1] == kwTYPE_LINE) {
+        if (w > 0 && w < comp_prog.count && comp_prog.ptr[w] != kwTYPE_LINE && comp_prog.ptr[w - 1] == kwTYPE_LINE) {
           w--;
         }
 
@@ -3697,12 +3697,14 @@ bcip_t comp_optimise_line_goto(bcip_t ip) {
 
   ip = comp_read_goto(ip + 1, &addr, &level);
   bcip_t goto_ip = addr;
-  if (comp_prog.ptr[goto_ip] == kwTYPE_EOC) {
+
+  // note: INVALID_ADDR is assumed to be > comp_prog.count
+  if (goto_ip < comp_prog.count && comp_prog.ptr[goto_ip] == kwTYPE_EOC) {
     new_addr = goto_ip + 1;
   }
-  while (goto_ip > 0 && comp_prog.ptr[goto_ip] == kwTYPE_LINE) {
+  while (goto_ip > -1 && comp_prog.ptr[goto_ip] == kwTYPE_LINE) {
     goto_ip += 1 + sizeof(bcip_t);
-    if (comp_prog.ptr[goto_ip] == kwGOTO) {
+    if (goto_ip < comp_prog.count && comp_prog.ptr[goto_ip] == kwGOTO) {
       code_t next_level;
       comp_read_goto(goto_ip + 1, &addr, &next_level);
       goto_ip = addr;
diff --git a/src/platform/android/app/build.gradle b/src/platform/android/app/build.gradle
index f144e62d..f8e48a08 100644
--- a/src/platform/android/app/build.gradle
+++ b/src/platform/android/app/build.gradle
@@ -9,8 +9,8 @@ android {
     applicationId 'net.sourceforge.smallbasic'
     minSdkVersion 16
     targetSdkVersion 27
-    versionCode 31
-    versionName "0.12.14.2"
+    versionCode 32
+    versionName "0.12.15"
     resConfigs "en"
   }
 
diff --git a/src/platform/android/app/src/main/java/net/sourceforge/smallbasic/MainActivity.java b/src/platform/android/app/src/main/java/net/sourceforge/smallbasic/MainActivity.java
index 0bf5af61..a60c6412 100644
--- a/src/platform/android/app/src/main/java/net/sourceforge/smallbasic/MainActivity.java
+++ b/src/platform/android/app/src/main/java/net/sourceforge/smallbasic/MainActivity.java
@@ -12,6 +12,7 @@
 import android.content.DialogInterface.OnCancelListener;
 import android.content.Intent;
 import android.content.pm.PackageManager;
+import android.content.res.Configuration;
 import android.content.res.Resources;
 import android.graphics.Rect;
 import android.location.Criteria;
@@ -101,6 +102,7 @@ public class MainActivity extends NativeActivity {
     System.loadLibrary("smallbasic");
   }
 
+  public static native void onActivityPaused(boolean paused);
   public static native void onResize(int width, int height);
   public static native void onUnicodeChar(int ch);
   public static native boolean optionSelected(int index);
@@ -378,7 +380,17 @@ public void optionsBox(final String[] items) {
     this._options = items;
     runOnUiThread(new Runnable() {
       public void run() {
-        openOptionsMenu();
+        invalidateOptionsMenu();
+        Configuration config = getResources().getConfiguration();
+        // https://stackoverflow.com/questions/9996333/openoptionsmenu-function-not-working-in-ics/17903128#17903128
+        if ((config.screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) > Configuration.SCREENLAYOUT_SIZE_LARGE) {
+          int originalScreenLayout = config.screenLayout;
+          config.screenLayout = Configuration.SCREENLAYOUT_SIZE_LARGE;
+          openOptionsMenu();
+          config.screenLayout = originalScreenLayout;
+        } else {
+          openOptionsMenu();
+        }
       }
     });
   }
@@ -589,6 +601,18 @@ protected void onCreate(Bundle savedInstanceState) {
     checkFilePermission();
   }
 
+  @Override
+  protected void onPause() {
+    super.onPause();
+    onActivityPaused(true);
+  }
+
+  @Override
+  protected void onResume() {
+    super.onResume();
+    onActivityPaused(false);
+  }
+
   @Override
   protected void onStop() {
     super.onStop();
diff --git a/src/platform/android/jni/display.cpp b/src/platform/android/jni/display.cpp
index fe8c1feb..6ff21441 100644
--- a/src/platform/android/jni/display.cpp
+++ b/src/platform/android/jni/display.cpp
@@ -118,7 +118,8 @@ Graphics::Graphics(android_app *app) : ui::Graphics(),
   _fontBufferB(NULL),
   _app(app),
   _w(0),
-  _h(0) {
+  _h(0),
+  _paused(false) {
 }
 
 Graphics::~Graphics() {
@@ -154,7 +155,7 @@ bool Graphics::construct(int fontId) {
 }
 
 void Graphics::redraw() {
-  if (_app->window != NULL) {
+  if (_app->window != NULL && !_paused) {
     ANativeWindow_Buffer buffer;
     if (ANativeWindow_lock(_app->window, &buffer, NULL) < 0) {
       trace("Unable to lock window buffer");
diff --git a/src/platform/android/jni/display.h b/src/platform/android/jni/display.h
index 8182edf7..7baa370a 100644
--- a/src/platform/android/jni/display.h
+++ b/src/platform/android/jni/display.h
@@ -25,6 +25,7 @@ struct Graphics : ui::Graphics {
   bool construct(int fontId);
   void redraw();
   void resize();
+  void onPaused(bool paused) { _paused=paused; }
   void setSize(int w, int h) { _w = w; _h = h; }
 
 private:
@@ -35,6 +36,7 @@ struct Graphics : ui::Graphics {
   FT_Byte *_fontBufferB;
   android_app *_app;
   int _w, _h;
+  bool _paused;
 };
 
 #endif
diff --git a/src/platform/android/jni/runtime.cpp b/src/platform/android/jni/runtime.cpp
index 59c855b0..b12b080e 100644
--- a/src/platform/android/jni/runtime.cpp
+++ b/src/platform/android/jni/runtime.cpp
@@ -130,6 +130,14 @@ int get_sensor_events(int fd, int events, void *data) {
   return 1;
 }
 
+extern "C" JNIEXPORT void JNICALL Java_net_sourceforge_smallbasic_MainActivity_onActivityPaused
+  (JNIEnv *env, jclass jclazz, jboolean paused) {
+  if (runtime != NULL && !runtime->isClosing() && runtime->isActive() && os_graphics) {
+    trace("paused=%d", paused);
+    runtime->onPaused(paused);
+  }
+}
+
 // callback from MainActivity.java
 extern "C" JNIEXPORT jboolean JNICALL Java_net_sourceforge_smallbasic_MainActivity_optionSelected
   (JNIEnv *env, jclass jclazz, jint index) {
diff --git a/src/platform/android/jni/runtime.h b/src/platform/android/jni/runtime.h
index 475f0824..7536eab6 100644
--- a/src/platform/android/jni/runtime.h
+++ b/src/platform/android/jni/runtime.h
@@ -66,6 +66,7 @@ struct Runtime : public System {
   void share(const char *path) { setString("share", path); }
   void showCursor(CursorType cursorType) {}
   void showKeypad(bool show);
+  void onPaused(bool paused) { if (_graphics != NULL) _graphics->onPaused(paused); }
   void onResize(int w, int h);
   void onUnicodeChar(int ch);
   void loadConfig();
diff --git a/src/platform/console/Makefile.am b/src/platform/console/Makefile.am
index 79fb0f47..f4a191e6 100644
--- a/src/platform/console/Makefile.am
+++ b/src/platform/console/Makefile.am
@@ -27,7 +27,7 @@ TEST_DIR=../../../samples/distro-examples/tests
 UNIT_TESTS=array break byref eval-test iifs matrices metaa ongoto \
 	         uds hash pass1 call_tau short-circuit strings stack-test \
            replace-test read-data proc optchk letbug ptr \
-           trycatch chain stream-files split-join sprint all scope
+           trycatch chain stream-files split-join sprint all scope goto
 
 test: ${bin_PROGRAMS}
 	@for utest in $(UNIT_TESTS); do                             \
diff --git a/src/ui/textedit.cpp b/src/ui/textedit.cpp
index f371c138..28f11fc5 100644
--- a/src/ui/textedit.cpp
+++ b/src/ui/textedit.cpp
@@ -1707,7 +1707,7 @@ void TextEditInput::updateScroll() {
 
 int TextEditInput::wordEnd() {
   int i = _state.cursor;
-  while (IS_VAR_CHAR(_buf._buffer[i]) && i < _buf._len) {
+  while (i >= 0 && i < _buf._len && IS_VAR_CHAR(_buf._buffer[i])) {
     i++;
   }
   return i;
@@ -1715,7 +1715,7 @@ int TextEditInput::wordEnd() {
 
 int TextEditInput::wordStart() {
   int cursor = _state.cursor == 0 ? 0 : _state.cursor - 1;
-  return (_buf._buffer[cursor] == '\n' ? _state.cursor :
+  return ((cursor >= 0 && cursor < _buf._len && _buf._buffer[cursor] == '\n') ? _state.cursor :
           is_word_boundary(&_buf, _state.cursor) ? _state.cursor :
           stb_textedit_move_to_word_previous(&_buf, _state.cursor));
 }