Javascript error on file download

Question

I have a file browsing portlet (5.0.3 .NET) that allows users to download files. I link the displayed files to a download aspx page that just uses the C# Response.WriteFile(filepath); action. The only problem is that when the browser Save/Open dialog pops up, I get a javascript error as well on line 473. Now my page has no javascript so I think the page is getting gatewayed and causing it to error. So is there a way to prevent this one page from getting gatewayed.

Answer 1

Here is the code for the Page_Load event. The filepath var is grabbed from the URL. I set the ContentType, so I wouldn't think it would see it as HTML. I'm not using any web controls on the download page, just this code-behind:
String FileName = Path.GetFileName(filepath);
Response.Clear();
Response.ContentType = "application/octet-stream";
String Header = "attachment; filename=" + FileName;
Response.AddHeader("Content-Disposition", Header);
Response.Flush();
Response.WriteFile(filepath);