Hi,
We have made great use of Alfresco Community v4.0.0 here in Limerick City and County Council. We have encountered an issue recently which we have remedied but I thought it would be good to share it here. Basically if you upload a PDF document without a .pdf extension then when you attempt to view this PDF on the Alfresco Mobile iOS application it will show a grey background instead of the file contents. The document previews fine in the Share preview in my browser. If we change the extension to .pdf then the document opens correctly in iOS. This is easily done especially if Windows/ Mac OS is set to hide the file extension.
Best regards,
James