simple Hello World gives errors

[Scott Kaplan]

C:\PXPerl\bin>perl test2.pl

(contents of test2.pl)
use Inline C => <<'END_C';
void greet() {
  printf("Hello, world\n");
}
END_C

greet;

(Output)
Can't use an undefined value as an ARRAY reference at C:/PXPerl/site/lib/Inline/
C.pm line 358.
INIT failed--call queue aborted.

Does anyone know why this doesn't work?

Thanks in advance,
Scott