diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index abcdd562..99a25e9a 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -24,13 +24,14 @@ Setting aside the religious wars that can arise over any development methodology
 0. Create your own fork of the repo and configure it to stay up-to-date with the upstream repo.
 	* Go to https://gitlab.com/pholy/OSCAR-code and click on **Fork** in the top right of the project page.
 	* In your fork's sidebar, go to **Settings > Repository** then click on **Expand** for "Mirroring repositories".
-	* Enter "https://gitlab.com/pholy/OSCAR-code" for the repository **URL**, make sure the mirror is set to **Pull** and then click **Mirror repository**.
+	* Enter "https://gitlab.com/pholy/OSCAR-code.git" for the repository **URL**, make sure the mirror is set to **Pull** and then click **Mirror repository**.
 
 1. Create a branch to work on your feature or bugfix:
 
         git clone https://gitlab.com/my-repo/OSCAR-code.git
         cd OSCAR-code
         git checkout -b my-branch
+    **Note:** Because OSCAR includes the branch name in its [version string](https://semver.org/spec/v2.0.0.html), **the branch name must contain only alphanumeric characters or "-"** ([0-9a-zA-Z-]).
 
 2. Write your code, committing to your branch as you go, using `git add` and `git commit -a`.
 
diff --git a/oscar/SleepLib/loader_plugins/dreem_loader.cpp b/oscar/SleepLib/loader_plugins/dreem_loader.cpp
index 6a08dd22..872dacca 100644
--- a/oscar/SleepLib/loader_plugins/dreem_loader.cpp
+++ b/oscar/SleepLib/loader_plugins/dreem_loader.cpp
@@ -23,6 +23,17 @@
 
 static QSet<QString> s_unexpectedMessages;
 
+DreemLoader::DreemLoader()
+{
+    m_type = MT_SLEEPSTAGE;
+    csv = nullptr;
+}
+
+DreemLoader::~DreemLoader()
+{
+    closeCSV();
+}
+
 bool
 DreemLoader::Detect(const QString & path)
 {
diff --git a/oscar/SleepLib/loader_plugins/dreem_loader.h b/oscar/SleepLib/loader_plugins/dreem_loader.h
index 7fd7ed52..d318d44e 100644
--- a/oscar/SleepLib/loader_plugins/dreem_loader.h
+++ b/oscar/SleepLib/loader_plugins/dreem_loader.h
@@ -20,8 +20,8 @@ const int dreem_data_version = 2;
 class DreemLoader : public MachineLoader
 {
   public:
-    DreemLoader() { m_type = MT_SLEEPSTAGE; }
-    virtual ~DreemLoader() { }
+    DreemLoader();
+    virtual ~DreemLoader();
 
     virtual bool Detect(const QString & path);
 
diff --git a/oscar/SleepLib/loader_plugins/zeo_loader.cpp b/oscar/SleepLib/loader_plugins/zeo_loader.cpp
index c9e0c467..e282d075 100644
--- a/oscar/SleepLib/loader_plugins/zeo_loader.cpp
+++ b/oscar/SleepLib/loader_plugins/zeo_loader.cpp
@@ -23,6 +23,7 @@
 ZEOLoader::ZEOLoader()
 {
     m_type = MT_SLEEPSTAGE;
+    csv = nullptr;
 }
 
 ZEOLoader::~ZEOLoader()
@@ -85,6 +86,7 @@ int ZEOLoader::Open(const QString & dirpath)
 int ZEOLoader::OpenFile(const QString & filename)
 {
     if (!openCSV(filename)) {
+        closeCSV();
         return -1;
     }
     int count = 0;
diff --git a/oscar/VERSION b/oscar/VERSION
index 3b76319b..fa5b86f6 100644
--- a/oscar/VERSION
+++ b/oscar/VERSION
@@ -1,4 +1,4 @@
 // Update the string below to set OSCAR's version and release status.
 // See https://semver.org/spec/v2.0.0.html for details on format.
 
-#define VERSION "1.1.0-beta-2"
+#define VERSION "1.1.0-beta-2.1"
diff --git a/oscar/update_gitinfo.bat b/oscar/update_gitinfo.bat
index 5e695421..4b05e755 100755
--- a/oscar/update_gitinfo.bat
+++ b/oscar/update_gitinfo.bat
@@ -12,7 +12,7 @@ git rev-parse --git-dir >nul 2>&1
 if errorlevel 1 goto GitFail
 
   for /f %%i in ('git rev-parse --abbrev-ref HEAD') do set GIT_BRANCH=%%i
-  if "%GIT_BRANCH%"=="HEAD" set GIT_BRANCH=""
+  if "%GIT_BRANCH%"=="HEAD" set GIT_BRANCH=
   for /f %%i in ('git rev-parse --short HEAD') do set GIT_REVISION=%%i
 
   git diff-index --quiet HEAD --