Try forcing it 
ppm install LWP --force

[download]
I don't use ppm often so I'm not sure if that command is correct.

nmake gave errors where it said it couldn't find Program Files - I replaced all "Program Files" mention in the makefile with Progra~1

You can install perl into "program files", but you have to police your path/config, see Changing Perl Config settings, example 

C:\>echo echo %~s1 >shortpath.bat
C:\>call shortpath.bat "C:\Program Files\Perl\bin\perl.exe"
C:\PROGRA~1\Perl\bin\perl.exe

C:\>C:\PROGRA~1\Perl\bin\perl.exe Makefile.PL


C:\>set path=C:\PROGRA~1\Perl\bin\perl.exe;%path

C:\>perl Makefile.PL

[download]
For future reference, its better if you copy/paste error messages .

In reply to Re^13: LWP - 500 Internal Error by Anonymous Monk
in thread LWP - 500 Internal Error by oalvi

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