diff --git a/scripts/ios-install-third-party.sh b/scripts/ios-install-third-party.sh
index 5813b19b8..2aabd7fe8 100755
--- a/scripts/ios-install-third-party.sh
+++ b/scripts/ios-install-third-party.sh
@@ -1,10 +1,5 @@
 #!/bin/bash
 
-#boostdir="`node ./node_modules/boost-lib/bin/boost-lib download -V 1.63`"
-#cd "$boostdir"
-#./bootstrap.sh
-#./b2 headers
-
 set -e
 
 cachedir="$HOME/.rncache"
@@ -23,8 +18,12 @@ function fetch_and_unpack () {
     if [ ! -d "third-party/$dir" ]; then
         (cd third-party;
          echo Unpacking "$cachedir/$file"...
-         tar zxf "$cachedir/$file"
-
+         if ! tar zxf "$cachedir/$file"; then
+             echo "Unpacking '$cachedir/$file' failed.  Debug info:" 2>&1
+             ls -l "$cachedir/$file" 2>&1
+             shasum ~/.rncache/boost_1_63_0.tar.gz 2>&1
+             exit 1
+         fi
          cd "$dir"
          eval "${cmd:-true}")
     fi