I'm trying to get a handbook collaboratively written and want to use Booktype. Our sysadmin team have set up branch 2.0 but I'm having quite a few problems with it. Including:
Edit book info - clicking on this option doesn't seem to do anything so I can't edit the info, change licence, add image etc.
The text editor seems to be a bit odd - sometimes changes don't get saved, and the styles change by themselves
I can't add attachments or notes
My sysadmin are happy to move to an earlier more stable version but recommended I get some advice about the best version to use first.
Are you using 1.6.1 or 2.0 branch? I don't know details about your hosting solution but I would say it might be file permissions on the "data" directory where the covers are being saved. Check the error log (if you are using Apache) to see if there are any error messages.