Forms :: (Upload File) Button Stopped Showing All File Types

I recently upgraded a DB from 2003 to 2013 and ran into the following problem.

I have a button that opens a file dialog box and allows the user to upload a file to a predetermined location (and store the address as a hyperlink). I borrowed this code from someone else on here and modified it slightly.

In any case, the button still works, but now when it opens it doesn't have an option for "All files" under file types. So I can upload MS Office files, text files, etc., but not PDF files which are by far the most common types my users upload.

Private Sub Command35_Click()
Dim dd As Integer
Dim fileDump As FileDialog
Set fileDump = Application.FileDialog(msoFileDialogOpen)
dd = fileDump.Show
Dim Yourroute As String
Dim yourrouteName
Yourroute = fileDump.SelectedItems(1)
yourrouteName = StrReverse(Yourroute)
yourrouteName = StrReverse(Mid(yourrouteName, 1, InStr(yourrouteName, "") - 1))
FileCopy Yourroute, "us170fp00dataWBO_Tool_RoomDrawings" & yourrouteName
Me.Drawing_Link = yourrouteName & " # us170fp00dataWBO_Tool_RoomDrawings" & yourrouteName
End Sub