changing URL from www.example.com/beta/ to www.example.com

Hi!

I just changed the URL of my wordpress site from https://www.example.com/beta/ to https://www.example.com, I went inside the admin menu and changed WordPress URI and Blog URI, then I moved the entire content to https://www.example.com, the posts seems fine, but my FLAGallery won’t show my skins, and when I try to upload from FLAGallery admin panel I get this error:

Warning: ftp_mkdir() [function.ftp-mkdir]: Can't create directory: No such file or directory in /home/example/public_html/wp-admin/includes/class-wp-filesystem-ftpext.php on line 240
Could not create directory: /home/example/public_html/beta/wp-content/plugins/flash-album-gallery/skins/comvercial_int_totto

as you can see, the ftp_mkdir() refers to “public_html/beta” which was the old dir I used for testing.

Any suggestions on how to actiually move the URI is appreciated!

Thanks in advance
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