I still seem to be getting the same/similar issue when I append files to an existing .7z file.
I satrt with a 248k 7z and when I am finished I have a 1k 7z with 1 file in. (not the one I was trying to add)
The code I have is loosely based on the example project
String> fileDict =
var compressor =
Is this the best approach or is there another way.