For both these issues I would suggest that you submit a free support ticket using the web address I have included below.
A member of our support team will be able to assist you with these issues.
ii) I think there is an issue with the creation of thumbnails when the filename that is uploaded is renamed (the incremental option) if the filename already exists on the server. It doesnt seem to create the thumbnail with the added increment. If this is a bug I am suprised this has got through testing.
Regards - Mark
Mark Fletcher | Training Manager | WebAssist