I've installed coppermine and when I attempt to upload to an album, I gat a 401 error. I suspect it has to do with the fact the gallery is in a login protected directory (using a CCBill script)
Here is the debug output:
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: album=3
SWF DEBUG: Global Post Item: user=YToyOntzOjc6InVzZXJfaWQiO3M6MToiMSI7czo5OiJwYXNzX2hhc2giO3M6MzI6ImJkN2ZjZDY5MjA2YWFiNTY4NDEyNTBlZTE5ZjdlZDI4Ijt9
SWF DEBUG: Global Post Item: process=1
SWF DEBUG: ReturnUploadStart(): File accepted by startUpload event and readied for upload. Starting upload to /members/cpg/upload.php for File ID: SWFUpload_0_0
SWF DEBUG: Event: uploadProgress (OPEN): File ID: SWFUpload_0_0
SWF DEBUG: Event: uploadError: HTTP ERROR : File ID: SWFUpload_0_0. HTTP Status: 401.
SWF DEBUG: Event: uploadComplete : Upload cycle complete.
Error Code: HTTP Error, File name: IMG_9433.jpg, Message: 401