i am having the same problem. initially i was told the xml file was to large & caused a time out. but i found a splitter & it didnt fix it. & from what I can see many people have this problem & there is no answer any one can give to resolve it other than the post already exist = false & hostgator tried that from an old forum posting for old version & it didnt work on the new .org version.
i wish someone could resolve this & give a definitive answer on how to correct this. very frustrating.
was told that procuring the SQL Dump file from .com would work in the relocating of blog but they wont. i have made repeated request for it & they never even bother to answer my inquiry on the topic.
SOMEONE PLEASE HELP! AM BEING HELD HOSTAGE BY WORDPRESS.COM!