I have been trying to get iTunes Match to work for a week. It keeps getting stuck at Step 2. To try and fix it I have been stopping and starting Match, sometimes it gets further and other times it doesn't get as far.
Today I have another problem, when I start iTunes Match it gives this error
"We could not complete your iTunes Store request. An unknown error has occurred (4002)."
Now I can't start iTunes Match all. Have to say I am very disappointed with how difficult it is to make this service work.
-- Edit --
I left iTunes Match running overnight. This morning iTunes had "quit unexpectedly". Now it is starting all over again (sigh).