just put the command line to start the carte server in a bat file.
I would put 2 lines in the bat file. First to stop the carte server
example when carte.bat file in same directory as bat file
carte.bat 127.0.0.1 8080 -s -p password -u user
and the second line to start the server
carte.bat 127.0.0.1 8080
In the past I also had some memory issue's with carte. I solved that by checking in the first transformation entry
"Clear results row before execution" and "Clear result files before execution"