Applescript - Run Multiple Instances of an App in Mac OSX I was hoping one of you kind folks could help me write a script that would open another instance of Transmission. 

From my online research, I took a stab at making my own and compiled the following script for AppleScript Editor. 

 do shell script "open -n -a '/Volumes/2 TB/App/Transmission.app'"


However, I get the following error message: 


  There is already a copy of Transmission running. This copy cannot be
  opened until that instance is quit.


Can anyone tell me what I'm doing wrong?
You would need to compile your own transmission-daemon to be able to run multiple instances. Once you have done this you can specify different ports on each instance and start them up. 

Information on compiling your own transmission-daemon on osx can be found here: 

https://forum.transmissionbt.com/viewtopic.php?t=7532&amp;p=52071

How to run multiple instances of transmission-daemon: 

https://forum.transmissionbt.com/viewtopic.php?f=8&amp;t=9139