Great products btw! Just to let you know your SHA-1 on files larger than 2GB is way off, and I have tested this on three versions, 1.4, 188.8.131.52 and beta version 2.
Ver 1.4 always gives me a result of DA39A3EE5E6B4B0D3255BFEF95601890AFD80709 for files larger than 2gb
Ver 184.108.40.206 throws an exception for file larger than 2gb
Ver 2 has a correct CRC-32 and MD5 but SHA-1 is way off.
On smaller files, all works fine on all versions I tested.