Description:
When normalizing, the errormessage"The file ... cannot be normalized nondestructively" occurs. The procedure is canceled.

Explanation:
This happens if the file contains a lot of silence or noise. Normalizing of noises or silence usually is not desired.

Suggestion:
Edit the audiofile with some other editing software, or normalize just the sections that contain real audio data.

Solution:
The next Logic version will contain an optimized normalize function.