Hi Elise,
Did you try using DebugOff (make sure you only include one g) in your experiment’s code on an external server, and the debugger still showed up? Did you make sure to either place DebugOff below PennController.ResetPrefix, or did you use the prefix: PennController.DebugOff()?
I didn’t change anything about that function in any PennController version, I only set things up on the PCIbex Farm so that the debugger would only (and always) show up at the demonstration link, and not at the data-collection link
Jeremy