Proc::Background does not appear to like spaces in the file name. However, I found another post on this and it resolved my issue with the spaces. Re: Proc::Background does not take file path with spaces

And here's the final, working code example for anyone else who comes along. 
foreach ( keys %bridges ) {
    if ( $bridges{$_} ) {
        my $cmdStr = Win32::GetShortPathName("C:\\Some Path\\$_\\Some 
+File.exe");
        my $proc1 = Proc::Background->new($cmdStr);
    }
}

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In reply to Re^2: Launching multiple programs from Perl script by Shawrich
in thread Launching multiple programs from Perl script by Shawrich

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