can't move file to library

and i have hard drive space on it and ive tried to move the shared folder to a different drive . that didnot work so ist back to the propper settings and still 3/4 of my downloads (after the downloading for hours) gives me the "can't move file to library" bull.....

so please
help me out, i cant do much without downloads so i would appricate your reply and whatever i have to do to get this fixed, as i think its a bug and not on my end as i have seen many questions in the forum, and i HAVE tried all that ive seen.....
so whatever i need to do in order to fix this problem would make me a little less bald, (as ive come to the point of pulling out my hair.)

if someone has the answer or helpfull hints, please share with me the instructions of this perticular erector set... i will send you all the good "web-carma" I can muster. thanks for your time in this matter, krashd@shaw.ca