--- a/WinWorkstation.st	Fri Oct 26 09:39:16 2018 +0200
+++ b/WinWorkstation.st	Fri Oct 26 09:42:08 2018 +0200
@@ -16993,7 +16993,7 @@
     if (__isExternalAddress(dataAddress)) {
         fileDialogData *pFdd = __externalAddressVal(dataAddress);
         pFdd->didPerformCroppedBaseNameHack = FALSE;
-        EnumWindows(enumWindowsToForCroppedBaseNameHackProc, pFdd);
+        EnumWindows(enumWindowsToForCroppedBaseNameHackProc, (LONG)pFdd);
 
         if (pFdd->didPerformCroppedBaseNameHack) {
             RETURN (true);