Im getting some weird issues since upgrading to SS 2.4.1 (Can confirm the same with 2.4.0 as well).

I currently have DOM r403 and SWFUpload r414 in use.

When uploading files using the FIleDataObjectManager i run into the issue where I am unable to upload any files. From what I can tell this is due to the line 587 check

if(!Permission::check("CMSAccess_CMSMain"))

When I remove this all works fine on dev machine but logs me out (and no file upload) when on staging (same as the Live server).

After re-enabling the above code and turning debug on for SWFUpload gives me this output.

---SWFUpload Instance Info---
Version: 2.2.0 Alpha
Movie Name: SWFUpload_0
Settings:
	upload_url:               http://somehost.host/FileDataObjectManager_Controller/handleswfupload
	flash_url:                http://somehost.host/swfupload/javascript/swfupload.swf?swfuploadrnd=319731271
	use_query_string:         false
	file_post_name:           swfupload_file
	post_params:              [object Object]
	file_types:               
	file_types_description:   
	file_size_limit:          20MB
	file_upload_limit:        20
	file_queue_limit:         20
	debug:                    true
	prevent_swf_caching:      true
	button_placeholder_id:    spanButtonPlaceholder
	button_image_url:         http://somehost.host/swfupload/images/upload_button.png
	button_width:             180
	button_height:            24
	button_text:              <span class='button'>Upload files</span>
	button_text_style:        .button { font-family: Helvetica, Arial, sans-serif; font-size: 12px; }
	button_text_top_padding:  6
	button_text_left_padding: 6
	button_action:            -110
	button_disabled:          false
	custom_settings:          [object Object]
Event Handlers:
	swfupload_loaded_handler assigned:  true
	file_dialog_start_handler assigned: true
	file_queued_handler assigned:       true
	file_queue_error_handler assigned:  true
	upload_start_handler assigned:      true
	upload_progress_handler assigned:   true
	upload_error_handler assigned:      true
	upload_success_handler assigned:    true
	upload_complete_handler assigned:   true
	debug_handler assigned:             true

SWF DEBUG: SWFUpload Init Complete
SWF DEBUG: 
SWF DEBUG: ----- SWF DEBUG OUTPUT ----
SWF DEBUG: Build Number:           SWFUPLOAD 2.2.0 Alpha 2008-10-17
SWF DEBUG: movieName:              SWFUpload_0
SWF DEBUG: Upload URL:             http://somehost.host/FileDataObjectManager_Controller/handleswfupload
SWF DEBUG: File Types String:      *.*
SWF DEBUG: Parsed File Types:      
SWF DEBUG: File Types Description:  ()
SWF DEBUG: File Size Limit:        20971520 bytes
SWF DEBUG: File Upload Limit:      20
SWF DEBUG: File Queue Limit:       20
SWF DEBUG: Post Params:
SWF DEBUG:                         OverrideUploadFolder=projects/Test
SWF DEBUG:                         dataObjectClassName=ProjectItem
SWF DEBUG:                         controllerID=80
SWF DEBUG:                         parentIDName=ProjectPageID
SWF DEBUG:                         fileClassName=File
SWF DEBUG:                         PHPSESSID=2aivgv7n448pct4ajdjnps1mg6
SWF DEBUG:                         hasDataObject=1
SWF DEBUG:                         fileFieldName=AssetFile
SWF DEBUG:                         dataObjectFieldName=ProjectItem
SWF DEBUG: ----- END SWF DEBUG OUTPUT ----
SWF DEBUG: 
SWF DEBUG: Event: fileDialogStart : Browsing files. Multi Select. Allowed file types: *.*
SWF DEBUG: Select Handler: Received the files selected from the dialog. Processing the file list...
SWF DEBUG: Event: fileQueued : File ID: SWFUpload_0_0
SWF DEBUG: Event: fileDialogComplete : Finished processing selected files. Files selected: 1. Files Queued: 1
SWF DEBUG: StartUpload: First file in queue
SWF DEBUG: Event: uploadStart : File ID: SWFUpload_0_0
SWF DEBUG: Global Post Item: OverrideUploadFolder=projects/Test
SWF DEBUG: Global Post Item: dataObjectClassName=ProjectItem
SWF DEBUG: Global Post Item: controllerID=80
SWF DEBUG: Global Post Item: parentIDName=ProjectPageID
SWF DEBUG: Global Post Item: fileClassName=File
SWF DEBUG: Global Post Item: PHPSESSID=2aivgv7n448pct4ajdjnps1mg6
SWF DEBUG: Global Post Item: hasDataObject=1
SWF DEBUG: Global Post Item: fileFieldName=AssetFile
SWF DEBUG: Global Post Item: dataObjectFieldName=ProjectItem
SWF DEBUG: ReturnUploadStart(): File accepted by startUpload event and readied for upload.  Starting upload to http://somehost.host/FileDataObjectManager_Controller/handleswfupload for File ID: SWFUpload_0_0
SWF DEBUG: Event: uploadProgress (OPEN): File ID: SWFUpload_0_0

The strange thing with this is it sometimes works (That is the progress bar does goes up and told that upload was successful, so additional debug lines) most of the time this doesn't work and just outputs what is above.

I am unsure why this has broken as I recall this working at least for 2.4.0 (cant confirm with 2.4.1) but even going back it seems to have broken somewhere.

The only thing I have changed is on line 393 of FileDataObjectManager.php which was throwing an error when using multiple FileIFrameFields

$total = isset($_POST['totalsize']) ? $_POST['totalsize'] : ( isset($_POST['uploaded_files']) ? sizeof($_POST['uploaded_files']) : 0 );

The above code seemed to fix that.

Make sure the PHP setting "session_use_only_cookies" is off.

I knew it wasnt DOM but something I forgot thanks UncleCheese.

Ok seems to have a weird affect on PHP 5.2.6-1 (the debian install) which logs me out when uploading a file. Works fine on my source install server. Playing around to see what the issue is exactly.