Full tree does not match TTH root

[Busigkille]

Hi!
I keep getting this "Full tree does not match TTH root"
i'm only in registred RAR hubs and i only download
offical realeses and when i take file list of this people wher i get the error from the TTH seems to be correct.
A friend told me that ther was a slight possibilty that my router culd be the problem. So i connected directly to the net and removed and readded the files still i get the same error.
about 3 of 4 users seems to give me this error...
Any suggestions on howe to resolv or override this error?
I use the 688 dc++ client