diff --git a/.travis.yml b/.travis.yml
index b9f7db3e8a..9e2e6e1614 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,7 +10,6 @@ sudo: false
 cache:
   directories:
   - thirdparty/download
-  - Support/Content
 
 addons:
   apt:
@@ -27,14 +26,12 @@ env:
 
 # Fetch dependencies
 # Run the build script
-# Fetch mod assets
 # Check source code with StyleCop
 # call OpenRA to check for YAML errors
 # Run the NUnit tests
 script:
  - travis_retry make all-dependencies
  - make all
- - travis_retry ./thirdparty/fetch-travis-assets.sh
  - make check
  - make check-scripts
  - make test
diff --git a/Makefile b/Makefile
index 5d68c4ae48..3223a2b5bc 100644
--- a/Makefile
+++ b/Makefile
@@ -254,19 +254,15 @@ test: utility mods
 	@echo
 	@echo "Testing Tiberian Sun mod MiniYAML..."
 	@mono --debug OpenRA.Utility.exe ts --check-yaml
-	@mono --debug OpenRA.Utility.exe ts --check-sequence-sprites
 	@echo
 	@echo "Testing Dune 2000 mod MiniYAML..."
 	@mono --debug OpenRA.Utility.exe d2k --check-yaml
-	@mono --debug OpenRA.Utility.exe d2k --check-sequence-sprites
 	@echo
 	@echo "Testing Tiberian Dawn mod MiniYAML..."
 	@mono --debug OpenRA.Utility.exe cnc --check-yaml
-	@mono --debug OpenRA.Utility.exe cnc --check-sequence-sprites
 	@echo
 	@echo "Testing Red Alert mod MiniYAML..."
 	@mono --debug OpenRA.Utility.exe ra --check-yaml
-	@mono --debug OpenRA.Utility.exe ra --check-sequence-sprites
 
 
 ##### Launchers / Utilities #####
diff --git a/mods/cnc/mod.yaml b/mods/cnc/mod.yaml
index 4ebdab8809..6054801125 100644
--- a/mods/cnc/mod.yaml
+++ b/mods/cnc/mod.yaml
@@ -12,13 +12,13 @@ Packages:
 	.
 	$cnc: cnc
 	./mods/common: common
-	speech.mix
-	conquer.mix
-	sounds.mix
-	tempicnh.mix
-	temperat.mix
-	winter.mix
-	desert.mix
+	~speech.mix
+	~conquer.mix
+	~sounds.mix
+	~tempicnh.mix
+	~temperat.mix
+	~winter.mix
+	~desert.mix
 	~movies-gdi.mix
 	~movies-nod.mix
 	~movies.mix
diff --git a/mods/d2k/mod.yaml b/mods/d2k/mod.yaml
index db73b1226e..803adf11c9 100644
--- a/mods/d2k/mod.yaml
+++ b/mods/d2k/mod.yaml
@@ -18,7 +18,7 @@ Packages:
 	$cnc: cnc
 	./mods/common: common
 
-	SOUND.RS
+	~SOUND.RS
 	d2k|bits
 	d2k|bits/tex
 	d2k|bits/xmas
diff --git a/mods/ra/mod.yaml b/mods/ra/mod.yaml
index 4d6e00a694..ce39ee15a0 100644
--- a/mods/ra/mod.yaml
+++ b/mods/ra/mod.yaml
@@ -14,17 +14,17 @@ Packages:
 	$cnc: cnc
 	./mods/common: common
 	~main.mix
-	redalert.mix
-	conquer.mix
-	hires.mix
-	local.mix
-	sounds.mix
-	speech.mix
-	allies.mix
-	russian.mix
-	temperat.mix
-	snow.mix
-	interior.mix
+	~redalert.mix
+	~conquer.mix
+	~hires.mix
+	~local.mix
+	~sounds.mix
+	~speech.mix
+	~allies.mix
+	~russian.mix
+	~temperat.mix
+	~snow.mix
+	~interior.mix
 	~scores.mix
 	~movies1.mix
 	~movies2.mix
diff --git a/mods/ts/mod.yaml b/mods/ts/mod.yaml
index 4533b9f2dd..6684bfda44 100644
--- a/mods/ts/mod.yaml
+++ b/mods/ts/mod.yaml
@@ -32,20 +32,20 @@ Packages:
 	~sidecd01.mix
 	~sidecd02.mix
 	~tibsun.mix
-	cache.mix
-	conquer.mix
-	isosnow.mix
-	isotemp.mix
-	local.mix
-	sidec01.mix: sidebar-gdi
-	sidec02.mix: sidebar-nod
-	sno.mix
-	snow.mix
-	sounds.mix
-	speech01.mix: speech-gdi
-	speech02.mix: speech-nod
-	tem.mix
-	temperat.mix
+	~cache.mix
+	~conquer.mix
+	~isosnow.mix
+	~isotemp.mix
+	~local.mix
+	~sidec01.mix: sidebar-gdi
+	~sidec02.mix: sidebar-nod
+	~sno.mix
+	~snow.mix
+	~sounds.mix
+	~speech01.mix: speech-gdi
+	~speech02.mix: speech-nod
+	~tem.mix
+	~temperat.mix
 # Firestorm
 	~scores01.mix
 	~expand01.mix
diff --git a/thirdparty/fetch-travis-assets.sh b/thirdparty/fetch-travis-assets.sh
deleted file mode 100755
index 9219c5bb86..0000000000
--- a/thirdparty/fetch-travis-assets.sh
+++ /dev/null
@@ -1,43 +0,0 @@
-#!/bin/sh
-
-# Die on any error for Travis CI to automatically retry:
-set -e
-if [ ! -e ./Support/Content/ra/conquer.mix ]; then
-	echo "Downloading RA mod content"
-	mkdir -p ./Support/Content/ra/
-	cd ./Support/Content/ra/
-	curl -s -L -O `curl -s -L http://www.openra.net/packages/ra-mirrors.txt | head -n1`
-	unzip ra-packages.zip
-	rm ra-packages.zip
-	cd ../../../
-fi
-
-if [ ! -e ./Support/Content/cnc/conquer.mix ]; then
-	echo "Downloading TD mod content"
-	mkdir -p ./Support/Content/cnc/
-	cd ./Support/Content/cnc/
-	curl -s -L -O `curl -s -L http://www.openra.net/packages/cnc-mirrors.txt | head -n1`
-	unzip cnc-packages.zip
-	rm cnc-packages.zip
-	cd ../../../
-fi
-
-if [ ! -e ./Support/Content/d2k/DATA.R8 ]; then
-	echo "Downloading D2K mod content"
-	mkdir -p ./Support/Content/d2k/
-	cd ./Support/Content/d2k/
-	curl -s -L -O `curl -s -L http://www.openra.net/packages/d2k-103-mirrors.txt | head -n1`
-	unzip d2k-103-packages.zip
-	rm d2k-103-packages.zip
-	cd ../../../
-fi
-
-if [ ! -e ./Support/Content/ts/conquer.mix ]; then
-	echo "Downloading TS mod content"
-	mkdir -p ./Support/Content/ts/
-	cd ./Support/Content/ts/
-	curl -s -L -O `curl -s -L http://www.openra.net/packages/ts-mirrors.txt | head -n1`
-	unzip ts-packages.zip
-	rm ts-packages.zip
-	cd ../../../
-fi