Harvester Stock and Invoice System Downloads for Offline Install or Update
Setup File for Harvester Stock and Invoicing
filedownloads/v3.12 Stock Setup.zip
After download extract the zip file and run Setup.exe
Yellow Update-File (this can simply be used to update to lastest version) 
Copy the HarvestInv.exe file from your download location and then paste it over the old HarvestInv.exe sun file in your Harvester Stock folder (ie My Computer, C drive, Program files, Harvester Stock System)
Once off purchase: ZMW equivalent of USD 450  
Renewal Subs per year: ZMW equivalent of USD 140