Smarty IE9 asks to download the index.php file (after the download has failed)? Is this my fault or activecollab?

So, I get this strange unexpected answer from Internet Explorer while testing file download with smartyin php.

Here, my smart code for downloading the file ( view), simplified to the main problem, for those who have not used activecollab, Router::assemblejust generates URLs with parameters that are read from MVC.

_{(source: iforce.co.nz )}

 <div id="xero_invoice_manager_api">
 {form action=Router::assemble('xero_invoice_manager_api') method=post id="xero_invoice_manager" enctype="multipart/form-data"}
 <div class="content_stack_wrapper">

 <input type="file" name="file_1" /><br/>
 <input type="file" name="file_2" /><br/>
 {wrap_buttons}
 {submit success_event="api_updated" }Authenticate{/submit}
 {/wrap_buttons}
 {/form}
 </div></div>

And here is my jquery for view.

 App.Wireframe.Events.bind('api_event_finished.content', function(event, settings) {
App.Wireframe.Flash.success(App.lang('Xero Invoice Manager has saved/uploaded your Xero API data.'));
 });

Here is my simplified controller (I found that the problem is smarty, not php).

//api view
function api(){
    if ( $this->request->isSubmitted()) {
        $this->response->respondWithData(true);
    }
}

Here is my controller with the download happening ..

//api view
function api(){
    $this->assignSmarty();
    if ($this->request->isSubmitted()) {
        $this->XeroAuthUpdate(); //update everything
        if(isset($_FILES)){
            $file_manager = new XeroFileManager();
            $file_manager->dumpFiles($_FILES);
            //upload the files
            foreach($_FILES as $file){
                $file_manager->handle_certificate_file($file);
            } //foreach add the headers
            if(function_exists('headers_list')){
                xeroDebugMode("[Controller] the headers to be sent are... ", headers_list());
            } //function check
        } //end if
        $this->response->respondWithData(array(
           // constraints
           'key_result'           => (bool)$this->checkValue(XeroAuths::getSetting('xero_consumer')),
           'secret_result'        => (bool)$this->checkValue(XeroAuths::getSetting('xero_secret')),
           // files secruity certificates
           'publickey'            =>  (bool)file_exists(XERO_PUBLIC_KEY_PATH),
           'privatekey'           =>  (bool)file_exists(XERO_PRIVATE_KEY_PATH),
           'xero_auth'            =>  (bool)validateXeroAuth(),
           //login constraints
           'install'              => !$this->checkInstallRequirements(),
        ));
    } //close the request
}

Here is Firefox answer with file_1and file_2not empty.

_{(source: iforce.co.nz )}

Internet Explorer 9 file_1 file_2 ( ).

_{(: iforce.co.nz)}

Internet Explorer 9 file_1 ( publickey.cer) file_2 ( privatekey.pem) ( index.php, ?).

_{(: iforce.co.nz)}

activecollab

Hello Micheal,

.

, , . , , . JSON IE activeCollab (, IE6), aC 3 JSON, , , - .

, ActiveCollab &

General Pre-Sale Questions: 1-888-422-6260 (toll-free) Technical Support: support@activecollab.com

..

: 1) IE → ( F12) → "" → " "... , "", " ".

IE , , IE ajax- .

, , , php ajax, . , - , , JS IE, , , FF firebug.

headers_sent()

headers_list ( respondWithData) Internet Explorer.

2012-08-08 06:50:16 the headers sent from this request is... Array
(
    [0] => X-Powered-By: PHP/5.3.8
    [1] => Set-Cookie: ac_activeCollab_sid_yhRk0xSZku=1%2Fhkykz0Rw0796e4lDykXekNXvhMMxC8pV4akJPMvA%2F2012-08-08+06%3A50%3A15; expires=Wed, 22-Aug-2012 06:50:15 GMT; path=/
    [2] => Content-Type: application/json
    [3] => Expires: Mon, 26 Jul 1997 05:00:00 GMT
    [4] => Cache-Control: no-cache, no-store, must-revalidate
    [5] => Pragma: no-cache
)

Raw Fiddler Internet Explorer

HTTP/1.1 200 OK
Date: Sat, 11 Aug 2012 08:08:46 GMT
Server: Apache/2.2.21 (Win32) mod_ssl/2.2.21 OpenSSL/1.0.0e PHP/5.3.8 mod_perl/2.0.4 Perl/v5.10.1
X-Powered-By: PHP/5.3.8
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie:   ac_activeCollab_sid_yhRk0xSZku=11%2Fz8rWxiRchAh8EWinYO2d7a1mmvn2DMKUdse1vfKh%2F2012-08-11+0    8%3A08%3A46; expires=Sat, 25-Aug-2012 08:08:46 GMT; path=/
Content-Length: 107
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Content-Type: application/json; charset=utf-8

 {"key_result":true,"secret_result":true,"publickey":true,"privatekey":true,"xero_auth":true,"install":true}

Raw Firefox.

HTTP/1.1 200 OK
Date: Sat, 11 Aug 2012 08:13:45 GMT
Server: Apache/2.2.21 (Win32) mod_ssl/2.2.21 OpenSSL/1.0.0e PHP/5.3.8 mod_perl/2.0.4 Perl/v5.10.1
X-Powered-By: PHP/5.3.8
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: ac_activeCollab_sid_yhRk0xSZku=12%2FO40CbXC9Vfa7OVnderlK2MFnvnpkyeckvO0Ab5NQ%2F2012-08-11+08%3A13%3A45; expires=Sat, 25-Aug-2012 08:13:45 GMT; path=/
Content-Length: 107
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Content-Type: application/json; charset=utf-8

{"key_result":true,"secret_result":true,"publickey":true,"privatekey":true,"xero_auth":true,"install":true}

, IE? Internet Explorer index.php ( ). , ( index.php move_uploaded_file).