>perl -v
This is perl, v5.8.0 built for MSWin32-x86-multi-thread
...

>perl -Mx -e ""
Unknown error
Compilation failed in require.
BEGIN failed--compilation aborted.

>perl -e "use x;"
Unknown error
Compilation failed in require at -e line 1.
BEGIN failed--compilation aborted at -e line 1.

>perl script.pl
Unknown error
Compilation failed in require at script.pl line 1.
BEGIN failed--compilation aborted at script.pl line 1.