diff --git a/misc/madupload.py b/misc/madupload.py
index 8c4b4c64..d68a6cd6 100755
--- a/misc/madupload.py
+++ b/misc/madupload.py
@@ -38,7 +38,7 @@
     raise SystemExit(
         "Usage: {} <filename>\n"
         "Uploads 'filename' to Maddavo's site, where filename should be "
-        "a .prices or Station.csv file.\n"
+        "a .prices, Station.csv or ShipVendor.csv file.\n"
         "\n"
         "NOTE to OCR USERS:\n"
         "Please upload the .prices file from your OCR DIRECTLY before "
@@ -46,22 +46,24 @@
     )
 
 upfile = sys.argv[1]
+uppath = pathlib.Path(upfile)
 
 ############################################################################
 
-
-if not pathlib.Path(upfile).is_file():
-    raise SystemExit("ERROR: File not found: {}".format(upfile))
+if not uppath.exists():
+    raise SystemExit("ERROR: {}: File not found".format(upfile))
+if not uppath.is_file():
+    raise SystemExit("ERROR: {}: Not a file".format(upfile))
 
 r = requests.post(
         upload_url,
         files={
             'Filename': (
-                upfile,
-                open(upfile, 'rb'),
+                uppath.name,
+                uppath.open("rb"),
                 'text/plain',
                 {
-                    "Expires": '300',
+                    "Expires": '90',
                 }
             ),
         }
@@ -76,5 +78,7 @@
 if resultCode.startswith("SUCCESS"):
     raise SystemExit("Upload complete")
 
-print("Upload failed: {}".format(resultCode))
-
+print("Error response from Maddavo's site: {}".format(resultCode))
+with open("tmp/maderror.txt", "w") as out:
+    print(r.text, file=out)
+    print("See tmp/maderror.txt for full response.")
\ No newline at end of file