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I was able to download the source, extract and install it on a Windows 8 64-bit machine. Here's what I did
Open a command shell, cd into the PPM directory and execute install.bat
You mentioned ppm not found... 2 thoughts come to mind.
I had problems with Win32::GUI. As other's have mentioned, Loft is using an old version. There was a "known" problem with using this version on 64-bit windows. See this. I had to grab that patched version of Win32::GUI extract it to a directory and build it using the familiar: Perl Makefile.PL, dmake, dmake install.
After which, I was able to cd into the Demo directories and run the perl scripts provided
In reply to Re: How to install "Perl GUI Loft" on Strawberry Perl?