diff --git a/src/install.sh b/src/install.sh
index 5aed2fd..b069ba6 100644
--- a/src/install.sh
+++ b/src/install.sh
@@ -832,7 +832,11 @@ detectImage() {
     warn "failed to locate 'install.wim' or 'install.esd' in ISO image, $FB" && return 1
   fi
 
-  info=$(wimlib-imagex info -xml "$wim" | iconv -f UTF-16LE -t UTF-8)
+  if ! info=$(wimlib-imagex info -xml "$wim" | iconv -f UTF-16LE -t UTF-8); then
+    warn "failed to read Windows image information, $FB"
+    return 1
+  fi
+
   checkPlatform "$info" || exit 67
 
   DETECTED=$(detectVersion "$info")
@@ -1122,7 +1126,12 @@ updateImage() {
   fi
 
   index="1"
-  result=$(wimlib-imagex info -xml "$wim" | iconv -f UTF-16LE -t UTF-8)
+
+  if ! result=$(wimlib-imagex info -xml "$wim" | iconv -f UTF-16LE -t UTF-8); then
+    warn "failed to read boot image information, $FB"
+    MANUAL="Y"
+    result=""
+  fi
 
   if [[ "${result^^}" == *"<IMAGE INDEX=\"2\">"* ]]; then
     index="2"