File>Export and choose IDML
Open that (opens as Untitled)
Try to package it again.
It still didn't work. I'm not that experienced with the process . . . I'm just not sure why it won't copy the linking files.
Check for "illegal" characters in your linked file names, or the names of any of the folders in the file path. Anything that is not a letter, a number, an underscore or a dash could cause this problem.
Do you have / or \ or : in your file name or in a folder or directory name? Don't use them, they are forbidden characters for files or folders or directories.
Don't use , & ( ) . neither.
Avoid äöüßïëÿñóúíé ÄÖÜÏËŸÑ and similar characters also.
That was it . . . I adjusted file names that had / in them and it packaged! Thanks!
Thank you - that was the problem . . . I had / in file names. Adjusted them and it packaged. Thanks so much!