uploading pictures thumbnails are not showing

[RBM06]

I've uploaded many times in my gallery, but for some reason the gallery won't show the thumbnails of my recent uploads, nor would it put it in the album, it gives me this message:

PHP running on your server does not support the GD image library, check with your webhost if ImageMagick is installed

*this is odd, when i uploaded successfully before

[Joachim Müller]

Your webhost might have changed something without notifying you. Try http://coppermine-gallery.net/demo/cpg14x/docs/faq.htm#VersionGD
If phpinfo says that you actually have GD enabled, do as suggested in the upload troubleshooting section of the docs.