Since some of the later versions of Lackey have made other editions no longer able to connect to the game server, about 2 months ago, I have been unable to update my Lackey. I've followed all the steps correctly, but now whenever I try to open Lackey I get the message ""LackeyCCG" is damaged and can't be opened. You should move it to the Trash." and it only gives me the option to cancel or move it to the trash. I do not know if this is an issue with Lackey or MacOS, but as I am not very well versed in technology, I do not know how to fix this problem. Anyone else have this issue, or better yet, solved it?
In regards to the Mac version problems people are having here is what I've found. I'm not a mac person so this may be off base but what my research shows me is that the Mac adds a quarantine attribute to downloaded files (like the zip archive) to mark it as potentially unsafe. That quarantine attribute gets applied to everything in the archive and it goes through more strict checks. The validation checks are more aggressive. Because the code is unsigned, this is why MacOS is claiming that it's damaged (it isn't). If you manually unzip the archive to a location (open with -> archive utility) and remove the quarantine flags it should work.
xattr -dr com.apple.quarantine /path/to/lackey.app
...You know, I feel like an idiot for not doing that the first time. Probably because I thought something different happened when I downloaded it before the updates. After all, that is how I got it to work to begin with. Issue resolved, it works just fine now.