Hello jameskal ,
I believe that the software you referenced in your Post to this forum is a product of Microsoft. It was apparently created to run on Windows systems. That product will not run in Linux/Ultimate Edition without some sort of Windows emulator or possibly a "Virtual Machine" using something like VMWare - see this Wiki for more information:
https://en.wikipedia.org/wiki/VMware.
While that particular application will not run in a native Linux environment, there are comparable products that are written to run on Linux platforms, without the need for a "Windows Emulator" or a "Virtual Machine". Take a look at this link for a list of the Open-Source POS Solutions :
http://blog.capterra.com/the-top-6-free-and-open-source-pos-solutions/Google is your friend! Try searching for an answer to your questions or problems. Often, it is NOT something new, and there just might be specific information regarding the issue.
BTW: I would suggest you create a "Signature"
http://forumubuntusoftware.info/ucp.php containing information about the PC/Hardware and O/S you are using. This makes it easier for someone to assist you when you post with a problem or question. You can see examples of a signature at the end of most replies to a post. You may look at my Signature at the end of this reply for an example. Details are important, as hardware can sometimes effect the functionality of the OS.
Regards...