UBB.threads PHP Forum Software Community Forums UBB.threads 7 Installation and Upgrade Support Unexpected EOF in archive

I just purchased ubbthreads 7.5.4.2. When a downloaded the tar.gz file and tried to unpack it, I get the following error. Seems something is wrong with the tar.gz file.

gzip: stdin: unexpected end of file
tar: Unexpected EOF in archive
tar: Unexpected EOF in archive
tar: Error is not recoverable: exiting now

I tried to unpack it on two different Linux but got same result.

Thanks,
Mike