diff --git a/.gitmodules b/.gitmodules
index 3b769a41a..ce53acad2 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -8,7 +8,7 @@
 	ignore = dirty
 [submodule "extern/AndroidPinning"]
 	path = extern/AndroidPinning
-	url = https://github.com/binaryparadox/AndroidPinning.git
+	url = http://gitlab.doeg.gy/cpu/androidpinning.git
 	ignore = dirty
 [submodule "extern/libsuperuser"]
 	path = extern/libsuperuser
diff --git a/README.md b/README.md
index e73703c69..84868da82 100644
--- a/README.md
+++ b/README.md
@@ -87,6 +87,31 @@ You can also run the tests in Eclipse. Here's how:
 5. Right-click on the **fdroid-test** project, then *Run As...* -> *Android JUnit Test*
 
 
+Troubleshooting
+---------------
+
+When building F-Droid, the following error may occur:
+
+> Invalid file: extern/UniversalImageLoader/library/build.xml
+
+Check the output of the ./ant-prepare.sh command. This error is often
+accompanied by the following message:
+
+> Error: The project either has no target set or the target is invalid.
+> Please provide a --target to the 'android update' command.
+
+The most likely cause of this is that your installed Android SDK is missing
+the target version specified by one of the dependencies. For example, at the
+time of writing this, UniversalImageLoader uses the "android-16" target API,
+however the default install of the Android SDK will usually only install the
+latest version ("android-19" as of writing). So you will have to install
+the "android-16" target via the SDK manager.
+
+NOTE: While it may be tempting to add "--target=android-19" to the
+ant-prepare.sh script, it is not the correct solution. Although it may work,
+it can cause strange bugs at runtime.
+
+
 License
 -------
 
diff --git a/ant-prepare.sh b/ant-prepare.sh
index 3752c823e..d4469f567 100755
--- a/ant-prepare.sh
+++ b/ant-prepare.sh
@@ -6,6 +6,10 @@ android update lib-project --path extern/MemorizingTrustManager
 android update lib-project --path extern/libsuperuser/libsuperuser
 android update project --path . --name F-Droid
 
+{ echo -e "\nSuccessfully updated the main project.\n"; } 2>/dev/null
+
 # technically optional, needed for the tests
 cd test
 android update test-project --path . --main ..
+
+{ echo -e "\nSuccessfully updated the test project.\n"; } 2>/dev/null
diff --git a/extern/AndroidPinning b/extern/AndroidPinning
index ce84a19e7..a0d713c61 160000
--- a/extern/AndroidPinning
+++ b/extern/AndroidPinning
@@ -1 +1 @@
-Subproject commit ce84a19e753bbcc3304525f763edb7d7f3b62429
+Subproject commit a0d713c6162b7016a3c3f55bcaefcdca4acacebd