Making thumbs of images results in warning: exif_read_data(nameofpic): File not supported in General Support Posted May 15 HAving similar PHP warnings here PHP Warning: exif_read_data(1-transf-kosk4-min.gif): File not supported in /home/m1698/Sites/processwire/site/modules/FileValidatorImage/FileValidatorImage.module:398 On this install I'm running images attached to a frontend form upload through the FileValidatorImage module which I installed first. This module uses PHP's exif_read_data function. And that doesn't seem to support gif. Couldn't find a list of supported file types in the PHP docs, though. I don't really worry too much about the warning itself. Only the mails I get from Tracydebugger get annoying after a while ;-) Just posting for reference.