Indie game storeFree gamesFun gamesHorror games
Game developmentAssetsComics

Alright, I'm going to try and find the bug, because if you had it with the latest master, then the next stable release will have that problem too!

Could you respond to my other questions to help me figure out the source of the bug? Thanks!


Command:  Desktop/ tetrastudios/project-tetra:osx-universal

Operating System (I also tried on High Sierra and Windows 10):

I'll try and give you the other info later. 




Thanks for all the additional info!

I see you're pushing to new channels in the meantime: I would recommend not doing that, as users who installed the older channel will have to redownload the full version instead of just applying the patch. I'll let you know as soon as I'm able to reproduce the issue, find out what caused it, and push a butler update for you.


Wait, so the first time it failed for you, you were pushing a .zip? Can you upload that exact .zip somewhere and link me to it? (A draft page works for me, just give me the URL once it's up)


Note: if you do upload the .zip to an page, use the regular web upload, not butler - I need the exact same file you used to reproduce the issue.

It does not work:

butler push Desktop/ tetrastudios/test4butler:osx-universal

That is how the issue happens: I think it's a combination of a zip file and osx-universal.


Now I really want to take a look at that .zip file :)

Can you use web upload to put i on the test4butler page, so I can download it as-is and test pushing it myself? Thanks!

Hi! I have to use google drive, as the file is 2.44GB. The link is here:

(Anyone viewing this later, you can download my game here at:

Thanks for suggestions on my game page! I'll put them into the download info now.


Thanks a ton! I'm able to reproduce the issue just by extracting the zip:

I'm feeling extremely relieved because this means it's just a simple issue with the zip format, and not with the push command itself :)


After a day of investigation, I'm very convinced that this .zip file is invalid: there's details over at

However, in the process, I discovered that butler was rejecting other files that are valid, so I fixed that :)

I've added the `butler auditzip` command to make it easier to investigate those cases in the future.

For now, I'm really curious though - what software produced this file? What was your exact process? Because it's not even just a "rare variant", it's just plain wrong :)


Also, here's what I recommend for the game:

  • Always push folders, not .zips
  • Push them to osx-universal and delete any other channels you've created when trying to work around that bug (so everyone gets delta updates)
  • If you encounter any problems pushing in the future, post here instead of creating another channel!


Thanks for helping me!

I used UE4 4.18.3 for the game, and zipped the game files for use on PC. I kept using a usb to try and copy the game to other computers with butler installed to get it uploaded. I might have to do a test download in the future to avoid any of these problems.

Thanks again!


zipped the game files for use on PC

Using the Windows Send to => Compressed folder feature? (see this) or something like Winzip, WinRar, 7-zip ?


Quick update: I'm not able to reproduce the error right now, pushing (what you pushed to osx-new) to (an equivalent of the osx-universal) channel from linux with the latest butler works just fine:

I'm going to try it all again from macOS with the exact version you mentioned.