problem in uploading rotating banner

i got a problem in uploading rotating banner and i got this message

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Warning: getimagesize() [function.getimagesize]: Filename cannot be empty in /home3/philtube/public_html/d7/administration/basic_settings.php on line 306

Warning: Cannot modify header information - headers already sent by (output started at /home3/philtube/public_html/d7/administration/basic_settings.php:306) in /home3/philtube/public_html/d7/inc/admin_design.inc.php on line 56

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how to resolve this problem, thanks

I got the same thing. When you upload the image, it's already saved. Then  you are clicking the save button at the bottom. There's nothing to save so it throws an error.

Somebody posted here that animated gifs don't work - if that is want this is.  Have you thought of using an ad server instead? Both Google ad manager an Open X work fine with Dolphin.