Hello, I'm having the same issue Wi3s3l is having with modifying SH2. I can use the makev.exe program to unarchive the files and look at the contents of 'rules.xml', etc. When I place it in a zip folder and use makev.exe to archive it again, the game won't run when I start it. The version of Stronghold Crusader 2 I'm using is: 1.0.22794 which is the latest version on Steam. The makev.exe program I got it from: https://www.stronghold-nation.com/downloads/file/349-modifying-utility/
The file names renamed the same since I only changed the contents. When I replace my modded assets.v with the original one the game runs again just fine.