So I bought TW2 yesterday off GOG and after downloading just over 5 gb of the game, I paused the download, shut my computer down, and went to sleep. This morning I opened up the download manager and resumed the download, but instead of say that the game was a 15 gb download, it showed 8.75 gb as the total. I completed the download and when I went to install I noticed that I only had parts 1-5 of the .bin files. I downloaded all the rest of the .bin files from the shelf, and when I went to install it said that the ones I got from the shelf were corrupted. Should I delete everything I've got so far and just re-download using the manager?

Check MD5 Hashes for each file and then download files that don't match.

setup_the_witcher2_ee_3.4.0.25.exe d1be88e5fdc33b930011fcc42e4d8897
setup_the_witcher2_ee_3.4.0.25.bin 1ffa67383248c9ec37ef6fb42f05f8f7
setup_the_witcher2_ee_3.4.0.25-1.bin 9e722929981ec4f6a6bbfc66751ffcb7
setup_the_witcher2_ee_3.4.0.25-2.bin 80f3542c5606222d2f6c5cf3c8de3f54
setup_the_witcher2_ee_3.4.0.25-3.bin c472a5d12d3dbea108f2893b8506c193
setup_the_witcher2_ee_3.4.0.25-4.bin 7f205072da57863541a3df7a16c90d80
setup_the_witcher2_ee_3.4.0.25-5.bin aa129c4f2806712b66505a1d29b2e5ee
setup_the_witcher2_ee_3.4.0.25-6.bin 85e71e98baa71ed02274c9dbc0093712
setup_the_witcher2_ee_3.4.0.25-7.bin bc5837b2e46474168e87718f0a6131b8
setup_the_witcher2_ee_3.4.0.25-8.bin f3482bc507821570e0df363706a370de
setup_the_witcher2_ee_3.4.0.25-9.bin 4926fd89d16ed4ec89c6ede74fbfd34a
setup_the_witcher2_ee_3.4.0.25-10.bin 62fe0a17713891aaa98b32e5be86674a
setup_the_witcher2_ee_3.4.0.25-11.bin f909926bae4b436e27ac71276deeeeaf

edit: you can use this for hashes - http://code.kliu.org/hashcheck/