For 1.8 Chernarus I've got it working.
First you'll need to install as per his instructions, but ignore the part about dayz_server\system\server_monitor.sqf
Then you'll need to download my edited files from
here.
For the mission files, you'll just need to copy them over to your mission folder and overwrite the existing files.
If you're using a custom fn_selfActions.sqf be sure to either change or comment out the line calling it in missionfile\dayz_code\init\compiles.sqf
If you want to use mine (it's a clean 1.8 file, with only the base building edits made) then simply copy it to missionfile\dayz_code\compile\
In the zip file, I've included a read me which just tells you where to put the code for dayz_server\system\server_monitor.sqf
The code is slightly different to the original because I had to change the variables around to fit with the new coding, please make sure to put my code in and not the original code or you will get errors.
I've also changed the file name for player_build.sqf to player_build2.sqf so it doesn't interfere with tent placements in 1.8.
If you're running a reality hive and have problems with built items not removing from the database after a restart, apply my fix from
here as it also fixes the buildables.
I think that's everything.