It is allowed under Resource extensions and I am trying to upload it from here (resource editor). What's interesting is that the only file types I can upload is a very short list of the default? file types. It's like it's not recognizing my complete list.
I was using a style sheet that was apparently not supported in the latest version, so it defaults to the default style sheet, which is OK. However, I'm now unable to upload .pptx to resources, even when .pptx is specified as an allowed file type under attachments.
I've gone to the Setup/Options/Attachments section and added pptx and ppt extensions. However, I can't add these files either to the Resources or Media sections (either place will work for me).
Is there a solution for this?
Thanks in advance.