No. I used it with some of the 17's and forgot I had removed it for a test.
Yes, that is the proper format assuming you are on an 32 bit machine and not a 64bit that have a different path to the executable.
As in "C:\Program Files(X86)\SRWare Iron\iron.exe"--enable-extensions --purge-memory-button
Question> have you restarted the browser since you made the change to the shortcut? Dumb question I know, but I've seen it happen.
Sorry for the delay...I have 32 bit windows7...it won't let me create the button due to the error