It looks to me as if the XSLoader module is looking for a specific version number. I checked the Makefile.PL for DateTime module, and under PREREQ_PM it mentions DateTime::TimeZone => 0.38. I had the same problem when I installed it. So, first, go over the Makefile.PL and make note of all the prereq's and version numbers. Second, reinstall all the deps with the required version numbers. Then reinstall DateTime. It should work then. Good Luck!