http://whatexit.org/tal/mywritings/dumb-things-to-check.html
Great list of things to check that you never think of. Especially the line endings. That has messed up my puppet configurations more than anything else.
Also
http://www.ipmsg.org/tools/fastcopy.html.en for a great tool to copy files including all the ACL’s and overcome the 260bit path limit