I am using the current version of YAM (It went into folder Y2M_BETA8_yamj-2.5-SNAPSHOT-r2665_32BIT_2Oct2011).
Anyway I scraped the movies and had no problems as already had files named correctly using The Renamer (see http://www.therenamer.com/
So basically on the root of the drive of my mede8er I have the following folders Videos, TV Shows, Music and Photo. With any videos I copied over I made sure that each video went into a seperate folder (even with boxsets) the only problem scraping was with Aeon Flux due to the way the name is written on the imdb site, a quick copy and paste sorted that.
I then started to try and scrape my tv shows. These are organised as follows
TV Shows\Name\ Series X\Name SxxExx - Title.avi (Obviously X = series number and SxxExx is say S01E01)
Some shows do not scrape, some do and in cases say series 1 and 3 would scrape but series 2 will not.
Ok I thought I'd try to .nfo the directory and give it another go after deleting the appropriate files from my jukebox folder.
In that case I just created a blank text file and renamed it to the same name as the first episode in that series with the extension .nfo, then using notepad++ edited the file and stuck in the link to imdb page for that tv show (not the series but the show in general). Needless to say YAM came back with the same results.
For an example here is my file structure for the TV Series The IT Crowd. Series 1 and 3 scrape ok, series 2 the folder jpg is good but there is nothing in anything else. The About.jpg has no banner available and all episodes are unknown.
Directory of H:\TV Shows\The IT Crowd
The IT Crowd Series 1
The IT Crowd Series 2
The IT Crowd Series 3
Directory of H:\TV Shows\The IT Crowd\The IT Crowd Series 1
The IT Crowd.S01E01.Yesterday's Jam.avi
The IT Crowd.S01E02.Calamity Jen.avi
The IT Crowd.S01E03.Fifty-Fifty.avi
The IT Crowd.S01E04.The Red Door.avi
The IT Crowd.S01E05.The Haunting of Bill Crouse.avi
The IT Crowd.S01E06.Aunt Irma Visits.avi
Directory of H:\TV Shows\The IT Crowd\The IT Crowd Series 2
The IT Crowd.S02E01.The Work Outing.avi
The IT Crowd.S02E02.Return of the Golden Child.avi
The IT Crowd.S02E03.Moss and the German.avi
The IT Crowd.S02E04.The Dinner Party.avi
The IT Crowd.S02E05.Smoke and Mirrors.avi
The IT Crowd.S02E06.Men Without Women.avi
Directory of H:\TV Shows\The IT Crowd\The IT Crowd Series 3
The IT Crowd.S03E01.From Hell.avi
The IT Crowd.S03E02.Are We Not Men.avi
The IT Crowd.S03E03.Tramps Like Us.avi
The IT Crowd.S03E04.The Speech.avi
The IT Crowd.S03E05.Friendface.avi
The IT Crowd.S04E06.Reynholm vs Reynholm.avi
My apologies for such a long post but I did want to give as much detail as possible in case anyone needs to try and replicate the issue.