Index: iOS/ShowDetailsController.swift
==================================================================
--- iOS/ShowDetailsController.swift
+++ iOS/ShowDetailsController.swift
@@ -145,12 +145,12 @@
             else {
                 print("Could not get key files: No documents directory")
                 return
             }
 
-            let keyFilePath =
-                documentDirectory.ofObject.appending(keyFile.ofObject)
+            let keyFilePath = documentDirectory.ofObject.appendingPathComponent(
+                keyFile.ofObject)
             generator.keyFile = OFMutableData(contentsOfFile: keyFilePath)
         }
 
         let passphraseText = (passphraseField?.text ?? "") as NSString
         let passphraseLen =