Hello hsfrey,

As GrandFather says, there’s little likelihood that a new Perl will “clobber” existing scripts; but you don’t have to take the chance. Don’t replace your current Perl. Download the version of your choice from http://strawberryperl.com/releases.html, choosing one of the “PDL editions.” As it says at the top of that page,

PDL edition = portable edition + extra PDL related modules and external libraries

so you’re getting a portable version which is guaranteed not to conflict with your system Perl. It comes as a .zip file: unzip it to a suitable directory, then invoke it via the portableshell.bat file that comes as part of the package. (See the README.txt file for more details.) You have the Perl version of your choice, with PDL, and it won’t conflict with your default Perl.

Hope that helps,