diff --git a/export-noobs/00-release/files/release_notes.txt b/export-noobs/00-release/files/release_notes.txt
index f2a9fd6..dcaf7dd 100644
--- a/export-noobs/00-release/files/release_notes.txt
+++ b/export-noobs/00-release/files/release_notes.txt
@@ -11,10 +11,10 @@ UNRELEASED:
   * In Scratch 2 GPIO plugin, set pin from dropdown list rather than free text
   * In Scratch 2 SenseHAT plugin, swap x and y axis values for LED array
   * Include latest Adobe Flash player (31.0.0.108)
-  * Include latest Mathematica (11.3.0.0)
   * Include latest RealVNC Server (6.3.1)
   * Include libav-tools
-  * Incllude ssh-import-id
+  * Include ssh-import-id
+  * Removed Mathematica
   * Merge in latest third-party code for Bluetooth ALSA interface
   * Add ability to prevent software update changing configuration files, by creating ~/.config/.lock file
   * Various other small bug fixes, tweaks and changes to text
diff --git a/stage4/EXPORT_IMAGE b/stage4/EXPORT_IMAGE
index 1f1bd4f..79ec11a 100644
--- a/stage4/EXPORT_IMAGE
+++ b/stage4/EXPORT_IMAGE
@@ -1,4 +1,4 @@
-IMG_SUFFIX="-4GB"
+IMG_SUFFIX=""
 if [ "${USE_QEMU}" = "1" ]; then
 	export IMG_SUFFIX="${IMG_SUFFIX}-qemu"
 fi
diff --git a/stage5/EXPORT_NOOBS b/stage4/EXPORT_NOOBS
similarity index 100%
rename from stage5/EXPORT_NOOBS
rename to stage4/EXPORT_NOOBS
diff --git a/stage5/00-install-mathematica/00-packages b/stage5/00-install-mathematica/00-packages
deleted file mode 100644
index fa9ba94..0000000
--- a/stage5/00-install-mathematica/00-packages
+++ /dev/null
@@ -1 +0,0 @@
-wolfram-engine
diff --git a/stage5/EXPORT_IMAGE b/stage5/EXPORT_IMAGE
deleted file mode 100644
index 79ec11a..0000000
--- a/stage5/EXPORT_IMAGE
+++ /dev/null
@@ -1,4 +0,0 @@
-IMG_SUFFIX=""
-if [ "${USE_QEMU}" = "1" ]; then
-	export IMG_SUFFIX="${IMG_SUFFIX}-qemu"
-fi
diff --git a/stage5/prerun.sh b/stage5/prerun.sh
deleted file mode 100755
index 9acd13c..0000000
--- a/stage5/prerun.sh
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/bash -e
-
-if [ ! -d "${ROOTFS_DIR}" ]; then
-	copy_previous
-fi