diff --git a/dnvm.ps1 b/dnvm.ps1
index a0d955063d..a0937cc342 100644
--- a/dnvm.ps1
+++ b/dnvm.ps1
@@ -67,7 +67,7 @@ function _WriteOut {
 
 ### Constants
 $ProductVersion="1.0.0"
-$BuildVersion="beta5-10374"
+$BuildVersion="beta5-10375"
 $Authors="Microsoft Open Technologies, Inc."
 
 # If the Version hasn't been replaced...
@@ -1148,12 +1148,15 @@ function dnvm-install {
         Write-Progress -Activity "Installing runtime" "Unpacking runtime" -Id 1
         Unpack-Package $DownloadFile $UnpackFolder
 
-        New-Item -Type Directory $RuntimeFolder -Force | Out-Null
-        _WriteOut "Installing to $RuntimeFolder"
-        _WriteDebug "Moving package contents to $RuntimeFolder"
-        Move-Item "$UnpackFolder\*" $RuntimeFolder
-        _WriteDebug "Cleaning temporary directory $UnpackFolder"
-        Remove-Item $UnpackFolder -Force | Out-Null
+        if(Test-Path $RuntimeFolder) {
+            # Ensure the runtime hasn't been installed in the time it took to download the package.
+            _WriteOut "'$runtimeFullName' is already installed."
+        }
+        else {
+            _WriteOut "Installing to $RuntimeFolder"
+            _WriteDebug "Moving package contents to $RuntimeFolder"
+            Move-Item $UnpackFolder $RuntimeFolder
+        }
 
         dnvm-use $PackageVersion -Architecture:$Architecture -Runtime:$Runtime -Persistent:$Persistent
 
diff --git a/dnvm.sh b/dnvm.sh
index 09ec229923..cc5a5cd3fc 100644
--- a/dnvm.sh
+++ b/dnvm.sh
@@ -2,7 +2,7 @@
 # Source this file from your .bash-profile or script to use
 
 # "Constants"
-_DNVM_BUILDNUMBER="beta5-10374"
+_DNVM_BUILDNUMBER="beta5-10375"
 _DNVM_AUTHORS="Microsoft Open Technologies, Inc."
 _DNVM_RUNTIME_PACKAGE_NAME="dnx"
 _DNVM_RUNTIME_FRIENDLY_NAME=".NET Execution Environment"