So, what I ended up doing was leaving the keywords text field completely blank, left the title out of the extended description, and just copy and pasted the title of the exact same item from someone who already had it listed and voila, it finally activated. I cannot see any difference in the title of the other persons item and mine whatsoever. The items that no one had listed already, I put back into my inv, deleted the MP listing I had created, and then put them back into MP (creating new listing numbers) and also left the title out of the description and the keyword field blank, and they were finally listed Weird glitches, worked around