Is the demo program hanging when you try to run a formulation? Would want to purchase software but this glitch does not give me confidence in the reliability.
The errors could have some causes like:
the demo version is not capable of processing the data you have.
the installation is corrupted, meaning that some files are broken and a repair is necessary.
you are using an old version different than the one available on the official website.
Access the following link to download the updated version of the WinFeed Least Cost Feed Formulation Software.