WowAce

>What steps will reproduce the problem?
1. Run on a Linux system.

>What is the expected output? What do you see instead?
Addon loads.  Instead, addon doesn't load.

>What version of the product are you using?
2.4

>Do you have an error log of what happened?
Not really, but...

>Please provide any additional information below.

It is not 100% certain that all WoW systems run on case-insensitive filesystems.  For reasons unknown, the archive downloaded from Curse is massively corrupt (and may not work on Macs, either).

1.  You have several directories named "libs\AceLibrary" and the like.  This is not the same as a directory named "Libs" containing another directory named "AceLibrary".
2.  Your TOC file refers to a directory called "Libs", but your actual directory names are "libs".

Fix:
1.  Make sure the zip file has correct directory structure, not files with backslashes in their names.
2.  Pick a capitalization and stick with it.  :)