I have various H5P activities on my website, and generally love creating them. However recently one of the Course Presntations stopped working. When viewing the page on the website it appears to be blank. On trying to edit the H5P content, when I click update I get the error message "unabletocopy". If I try to create new material I get the same error. Any help greatly appreciated, especially as a big conference is wanting to access this material on Monday!