required databases not available when running NeBcon

Hi, I'm interesed in NeBcon.
I followed the readme.txt in NeBcon but encountered some problems. The download links in the script download_db.sh are not available and some problems occur as I use nebcon.pl. The problems are as follow:

copy and install SPcon at local .........
tar: data/ur90/uniref90.03.phr: Wrote only 1536 of 10240 bytes
tar: data/ur90/uniref90.03.psi: Cannot open: No space left on device
tar: data/ur90/uniref90.05.psd: Cannot open: No space left on device
tar: data/ur90/uniref90.02.psd: Cannot open: No space left on device

Are these errors result from the missing databases in download_db.sh ?
Thanks.