Try using Firefox with the Firebug extension. Open the Firebug window and do the upload. Look in the net tab in Firebug and find the request to /testing/fileattach/js. Expand that request and check the response tab to see what is coming back. It sounds like you aren't getting a JSON response, which could mean an error in your js menu callback. Seeing what is outputted in response will greatly help with that.

Jamie Holly
http://www.intoxination.net 
http://www.hollyit.net

On 2/12/2011 2:57 AM, pavithra wrote:

I am trying to upload files using form api in my module and I dont want to use the nid..
I have attached the ".module " file what I have coded...

I have refered the drupal's core module-upload module n and have reached the coding to the current extent.

When I click on the button " Click here to attach the file", I get error "An HTTP error 0 occurred.

/testing/fileattach/js".

Please help me .

--
Cheers