I made an app. It has a GUI with some buttons. The buttons run Applescripts to open folders. It works on MY early 2011 17" MBP but NOT on my co-workers. We all have different OS versions. The app WILL NOT even open on their machines. I’m a little rusty with XOJO but I think it may be because I set the build settings to 64 bit. I set it to 32 bit and re-compiled. I’ll have to wait till Monday to see if that was the problem.