I'm trying to unarchive some old photos I have that are stored in ACE format (via WinACE). The file was created a little over 10 years ago.

I'm running unace l photos.ace and getting what seems to be a full list files.

When I run unace e photos.ace I and am getting an error.

The output is:

UNACE v1.2    public version

Processing archive: photos.ace

Authenticity Verification:
created on 16.8.2002 by *UNREGISTERED VERSION*

Mt. St. Helens
File compressed with unknown method. Decompression not possible.

Error occurred

Does anyone have any suggestions/ideas on how to extract these?

Edit: I've downloaded the linux version (v2.5) from winace.com's site with the same effect.

2 Answers 2


You can try the unace-nonfree Install unace-nonfree package.


You might want to try WinAce in wine or a VirtualBox.


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