asp.net - context.Request.Files collection empty on remote server only -

I am using a custom asics handler to upload a file app. When run locally, the file upload is OK. When I use the same setup on the web server, I get an "out of the index category" error in firebug I see the binary content of the file in the post data and the filename query string Also passed in Anyone seen this before? I'm sure it's a minor, but it's driving me on the wall.

Update: I found out some progress that I am getting two different errors. I'm focusing on FF from another IE with FF / Chrome, I'm just focusing on FF That's why Firebug makes debugging easy. Now I get an error "No part of the path could be found" C: \ inetpub \ wwwroot \ ""

Update 2: This work has been found in FF / Chrome. IE and FF / Chrome change the data differently.

Update 3: Here is the output of the Network Profiler in the IE Dev Tool:

 < Code> Request Header: Post a Key Value Request / Secure / Upload Handler. ASX? Accept HTTP / 1.1 Text / HTML, App / XHTML + XML, * / * Refer Http://cms.webstreet.co.il/Secured/fileUpload.aspx Accepted-language IL user-agent Mozilla / 5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident / 5.0) Content-type multipart / form- Data; limit = --------------------------- 7db13b13d1b12 Accept-encoding gzip, deflate host cms.webstreet.co.il Length of content 262854 Keep Connection - Alive Cash-Control No-Cash Request Body: ----------------------------- 7db13b13d1b12 Content-Vision: Form- Data; name = "qqfile"; filename = "P-Art_Page_Digital.jpg" content-type: image / jpg & lt; Binary file data not shown & gt; --------------------------- 7db13b13d1b12--    
 
 
 See the list of comments (large) and answers related to the original question. It is not certain why this works now, but Elad has fixed his problem.