We've created this Forum Thread with some workarounds and advice to assist you in publishing you ebook.
Problem uploading files to paperback project
hello, I am experiencing the same issue that many of us encountered last month whilst uploading PDF files.
Lulu simply provides a very generic error message:
I tried to upload a file that worked last month but still I received the same unspecified error message.
I can only presume that Lulu is still experiencing the very same server error, which occurred last month.
Could you investigate and revcert back to me ASAP?