Upgraded POE now fails

I upgraded my POE modules from sourceforge and now my application gives me
the following error:

"EWOULDBLOCK" is not exported by the Errno module at
C:/Perl/site/lib/POE/Kernel.pm line 12
Can't continue after import errors at C:/Perl/site/lib/POE/Kernel.pm line 12
BEGIN failed--compilation aborted at C:/Perl/site/lib/POE/Kernel.pm line 12.
Compilation failed in require at (eval 15) line 1.
BEGIN failed--compilation aborted at (eval 15) line 1.
could not import qw(Kernel) at G:\bin\vpn\tpaping.pl line 14
BEGIN failed--compilation aborted at G:\bin\vpn\tpaping.pl line 14.

Any ideas as to what caused this?  The install appeared to go fine.