diff --git a/audiogame-manager.sh b/audiogame-manager.sh
index c724e31..61dd466 100755
--- a/audiogame-manager.sh
+++ b/audiogame-manager.sh
@@ -280,34 +280,63 @@ clear_cache() {
 }
 
 download() {
-    local source=($@)
-    for i in "${source[@]}" ; do
-        local dest="${i##*/}"
-        dest="${dest//%20/ }"
-        dest="${dest#*\?filename=}"
-        dest="${dest%\?*}"
-        # Remove the destination file if it is empty.
-        test -s "${cache}/${dest}" || rm -f "${cache}/${dest}" 2> /dev/null
-        if [[ "${redownload}" == "true" ]] && [[ -e "${cache}/${dest}" ]]; then
-         rm -v "${cache}/${dest}"
-        fi
-        # Skip if the item is in cache.
-        test -e "${cache}/${dest}" && continue
-        if ! curl -L4 -C - --retry 10 --output "${cache}/${dest}" "${i}" ; then
-            local exit_code="$?"
-            if [[ $exit_code -eq 22 ]]; then
-                echo "File not found: \"$i\" (HTTP 404)"
-                # Remove the empty file.
-                rm -f "${cache}/${dest}"
-                exit 1
-            fi
-        fi
-        if file -b "${cache}/${dest}" | grep -q "HTML document" ; then
-            echo "File not found: \"$i\" (HTML document probably 404)"
-            rm -f "${cache}/${dest}"
-            exit 1
-        fi
-    done
+   local source=($@)
+   for i in "${source[@]}" ; do
+       local dest="${i##*/}"
+       dest="${dest//%20/ }"
+       dest="${dest#*\?filename=}"
+       dest="${dest%\?*}"
+       # Remove the destination file if it is empty.
+       [[ -s "${cache}/${dest}" ]] || rm -f "${cache}/${dest}" 2> /dev/null
+       if [[ "${redownload}" == "true" ]] && [[ -e "${cache}/${dest}" ]]; then
+           rm -v "${cache}/${dest}"
+       fi
+       # Skip if the item is in cache.
+       [[ -e "${cache}/${dest}" ]] && continue
+       { if ! curl -L4 -C - --retry 10 --output "${cache}/${dest}" "${i}" ; then
+           echo "Could not download \"$i\"..."
+           exit 1
+       fi; } | dialog --backtitle "Audio Game Manager" \
+           --progressbox "Downloading \"$dest\" from \"$i\"" -1 -1
+       local downloadError=1
+       case "${dest##*.}" in
+           "pk3"|"zip")
+               unzip -tq "${cache}/${dest}"  | dialog --backtitle "Audio Game Manager" \
+                   --progressbox "Validating ${dest##*.} file" -1 -1 --stdout
+                   downloadError=$?
+           ;;
+           "7z")
+               7z t "${cache}/${dest}" | dialog --backtitle "Audio Game Manager" \
+                   --progressbox "Validating 7z file" -1 -1 --stdout
+                   downloadError=$?
+           ;;
+           "exe")
+               # Check if it's a valid Windows executable by looking at the MZ header
+               if ! hexdump -n 2 -v -e '/1 "%02X"' "${cache}/${dest}" | grep -q "4D5A"; then
+                   downloadError=0
+               fi
+           ;;
+           "wad")
+               if [[ "$(file -b --mime-type "${cache}/${dest}")" != "application/octet-stream" ]]; then
+                   downloadError=0
+               fi
+           ;;
+           *)
+               # Add HTML check for other file types
+               if file -b "${cache}/${dest}" | grep -q "HTML document" ; then
+                   echo "File not found: \"$i\" (HTML document probably 404)"
+                   downloadError=0
+               fi
+           ;;
+       esac
+       if [[ $downloadError -eq 0 ]]; then
+           rm -fv "${cache}/${dest}"
+                   dialog --backtitle "Audio Game Manager" \
+                       --infobox "Error downloading \"${dest}\". Installation cannot continue." -1 -1 --stdout
+                   alert
+                   exit 1
+       fi
+   done
 }
 
 get_bottle() {
@@ -489,7 +518,7 @@ help() {
     echo "${configFile%/*}/settings.conf"
     echo "The syntax is variable=\"value\""
     echo
-    echo "ipfsGateway=\"https://gateway.pinata.cloud\" # Gateway to be used for ipfs downloads."
+    echo "ipfsGateway=\"https://ipfs.stormux.org\" # Gateway to be used for ipfs downloads."
     echo "noCache=\"true\" # Do not keep downloaded items in the cache."
     echo "noqjoypad=\"true\" # Do not launch qjoypad."
     echo "norh=\"true\" # Do not install RHVoice."
@@ -1155,7 +1184,7 @@ unset noCache
 unset manualInstall
 unset version
 # ipfs gateway
-export ipfsGateway="${ipfsGateway:-https://gateway.pinata.cloud}"
+export ipfsGateway="${ipfsGateway:-https://ipfs.stormux.org}"
 export nvdaControllerClientDll="${ipfsGateway}/ipfs/QmWu7YdSbKMk1Qm5DKvEA5hk1YuAK8wVkwhDf2CsmPkmF1?filename=nvdaControllerClient32.dll"