In Alfresco share (3.3g installed, previous versions have the same problem) When we place files into the the system, they do not always generate thumbnails (returns the two cog icon instead), and or when viewing the file you get an error stating ''can not load preview from server''
Is there a way to force the update of thumbnails, and server side previews.
The Thumbnail problem has been known to occur on image files.
Regards
Philip