Oolite Bulletins

i posted this separately in this forum (didn't notice this thread!). when expanding yam.zip i get a 'unexpected end of archive error'. any help?

hi, first post! i haven't been playing oolite for long (veteran of elite on c64 and amiga). downloaded some oxp's, but i'm having real trouble with yam.zip. it either fails to download entirely, or it's corrupt when i think it has downloaded. any way round this?