Thanks for the offer, Steve.

Currently I'm just trying to get the webhost to install some of those core modules as System Modules.  They've done a couple but there are more that I have in my code.  

A few more issues are:

1. Have you ever seen the problem with cPanel where you install a module (using cPanel), but then it doesn't appear in the list of modules that cPanel shows as being installed under your account?  This is what's happening, and I saw the same thing years ago with a previous migration.  One implication is that I can't uninstall such modules via cPanel, because I can't see them in cPanel.

2. The modules I've tried installing under my account after the migration are not being picked up by my code.  I usually use this line to update @INC so it can find modules I've installed:
    use lib '/home/myusername/perl5/lib/perl5';
but it looks as if I now have to add another line:
    use lib '/home/myusername/perl/usr/share/perl5'
It's getting messy.  Is this what people usually have to do (i.e. multiple 'use lib' lines)?  Any suggestions?  Would uninstalling and reinstalling the modules I installed before the migration help (i.e. would they all be installed in the same location)?

3. I also note that some modules (e.g. LWP) are installed in the system areas (i.e. not under my account), but are NOT displaying when I click "Show System Modules" in cPanel.  Have you seen that before?  Any ideas how this happens?

Thanks again.