Hey Alex, thanks for getting back to me with more information.
I have not been able to reproduce the problem.
you have said: "All you need to do is compact the files."
By "compacting the files" do you mean.... creating a new zip archive, adding the files, and then saving the archive?
I've done that. I did that with the .txt files and I have now done it with the .jpg files.
Compacting the files is not causing the problem for me.
Can you give me some application code that reproduces the error?
using (var zip = new ZipFile())
Can you give me a stacktrace?
Also, can you try this with the latest v1.7 of the library and see if it occurs for you there?
Thanks, I hope we can figure this out.