Error messages about permission to access files are a part of computer operations today. These sometimes appear when you attempt to run the RT Systems programmer.
This was the latest one we saw:
This one turned out to be controlled by the virus protection PC Matic. Clicking on the link for PC Matic in the tray revealed options. In those options were found those for alerts for warnings. This was changed to an advanced setting that warned and allowed the user to decide about the file.
Once done, the next time the program ran, PC Matic opened a screen that clearly detailed the file for the RT Systems program and gave the user options to allow or disallow. Once allowed, all worked properly.
So, with appearance of this warning, check your virus protection program for an option that will allow a certain program or will allow you to choose the desired course of action.