When I try to install SilverStripe 3 on my hosting I get this warning:
fileinfo should be enabled in PHP. SilverStripe uses it for MIME type detection of files. SilverStripe will still operate, but email attachments and sending files to browser (e.g. export data to CSV) may not work correctly without finfo.
Support has told me that fileinfo is no longer a module and is built into PHP? I can't see it in the list of modules in phpinfo().
Is this a bug with SS (i.e. is it wrongly reporting an error) or is it a configuration issue?
I've got the same thing - not sure if it's a true 'error' as my SilverStripe install still installs and 'runs' - by which I mean I get a site, I can load themes, etc. However I'm encountering errors when writing new content to the database... don't think this is related to this issue however?
Did you complete your install? Were there any further errors from this point?