No "make link" on files list

What is the link to do and we can make it in the terminal.

Is to make the application to run on Ubuntu.

2. Right click it and select "make link"
3. Drag 'n' drop this link to your desktop, which you can now doubleclick to run POSper.

OK so its a link to the desktop. Where is the file and what is the filename you are right clicking? We can then give a command to do same

The file is in Home/C-Applications/Posper/posper-2.2-1029-2013-05-13.
The instruction only mention Right Click on file posper but in the directory there 4 files
with same name.
1 posper on opening is POSper start script
2 posper.exe
3 posper.jar
4 posper_devel.exe
Which one is the correct one.

Looks like you have the Windows version rather than the Linux version. Is there not a Linux version

The main file is ZIP file from SourceForge.
On the instructions there is a way to setting up in Windows and the next one in Linux.

Setting up your Program in Linux
0. These instructions assume you're using Nautilus.
1. Once you have unzipped POSper into your folder, find the file called "posper". It looks like a piece of paper with a grey gear on top.
2. Right click it and select "make link"
3. Drag 'n' drop this link to your desktop, which you can now doubleclick to run POSper. Before you go ahead and Double-click on it run the configuration program config.exe which allows you to choose another than the default HSQL database - see readme.txt.
4. Follow instructions in "Setting up your program : Common" below

What is the location of the "posper.jar" file please? We can then run a quick test and make this run dead easy

The file is in Home/Posper/posper-2.2-1029-2013-05-13

If you run:

java /home/posper/posper-2.2-1029-2013-05-13/posper.jar

Does it run OK? I've made the folder names lowercase but if they are uppercase then please adjust. Linux is very case sensitive

luis@l-System-luisj:~$ java /home/Posper/posper-2.2-1029-2013-05-13/posper.jar
Error: Could not find or load main class .home.Posper.posper-2.2-1029-2013-05-13.posper.jar
Caused by: java.lang.ClassNotFoundException: /home/Posper/posper-2/2-1029-2013-05-13/posper/jar
luis@l-System-luisj:~$

Based on comment #4 I assume that you should not start the posper.jar file directly, but the posper script.

What happens if you execute the command

/home/Posper/posper-2.2-1029-2013-05-13/posper

And a completely different way to a possible solution: Is there any support information available where you got these files? That would be far better than us guessing what might be necessary for a foreign program that comes from outside Ubuntu.

Yesterday come to same solution as you about contact Posper support which is in Sourceforge site
the response was this
“The version you downloaded is utterly outdated - my bad.
I've created a new release. Please start afresh download and follow all instruction in the file readme.txt.
While the instructions you found are still valid you might have missed some point like reading the readme.txt setting up the MySQL DB, and running config to configure the database connection (using HSQLDB is not a good idea for production use).
Good luck”
I have to start a new installation hope it works.
Thank you

Can you post the link to the fix please. It may help others