It's fixed in ,15 update.
I'm having this problem as well. I'm using the most current version of SB and TDNAM.
Earlier today I scraped some listing and noticed that they expired in October! I deleted the sbtdnam.dat file and ran the scrape again. It tried to download the new file, but it was corrupted. I uninstalled then reinstalled the addon, but it keeps saying the file is corrupted. I did try using different words and extensions, but I get that error everytime.