Hello!
You need to find out which process or service is listening to the ports 19004 and onwards (19005, 19006 etc.). To do this, you might follow the advice given
in this or similar articles that can be googled with the keywords "how to find the process that is listening to a port".
You can also try and change the port number in the profile settings. To do this, navigate down to the settings file which is located here:
c:\Users\%username%\MarketFeeder Pro 8\profiles\%profile name%\settings.ini
Open the file in a text editor, such as Notepad, locate the "[General]" section and insert the line
LoggerPort=1025
under the section name (see the screenshot attached).
Note: you will have then change this port in each settings profile you are going to use, and each port number must be different from another, i.e. 1026, 1027 etc.