QTR-Quadtone RIP

I'm new to Mac and QTR. I have run the installation file on my Mac
(Tiger 10.4.11) which has worked and I am able to access the in-built
profiles when printing from Photoshop CS. However, when trying to
calibrate and attempting to copy/paste the Epson 2100 UcEEnhMatte-warm
profile in order to modify it I am denied access. It seems that the
installation has mounted QTR on my desktop and the mount permissions
are keeping me out. (I don't want to have to mount it every time
either.) Has my installation run correctly in creating this mount
point? I specified installation to the macintosh HD during the install
wizard and no other alternatives were created.

Any help gratefully received while I still have some hair!

Thanks.

Mark