I have the TSP package installed and working.
I downloaded all the files from the Concorde (TSP/Waterloo) websites. I tried different versions. Even extracted all the files.

I put the files in my R working directory.
Finally, when running concorde\_path() it was able to pick up that the files are found.
However, when I run concorde\_help() I receive an error.

I got a cygwin1.dll not found error. So I installed cygwin.
I still get an error.
I tried putting all the concorde files in the bin folder of cygwin (where cygwin1.dll lives) and pointing the R working directory and the concorde\_path() there and I get a status 123 error.

I also have the Concorde windows app downloaded and it does work. I found another post suggesting that it has to work in order for it to work within R.

Running R/Rstudio under Windows

Thank you for any suggestions and help you may have.