bug Error when trying to download modpack (Critical)

[HenrikoMagnifico]

Hello! I've been working with modpacks for quite some time now, and everything has gone well until today, when I tried to update my modpack yet again (I've done that multiple times before). I pasted the new modpack URL into my modpack settings, saved and went into the Technic Launcher where I tried to install the update for my pack - it didn't work. It just gave me this error after a few seconds!

Modpack URL: https://dl.dropboxusercontent.com/s/1xvcwtvwss1e2h4/YaoPackExtreme1.2.3.zip?dl=1   

Error log: https://www.dropbox.com/s/kq87ng6gnee24p3/techniclauncher_2016-07-21.log?dl=1

I've never encountered something like this before, and I've tried to fix it by changing some things in the download URL, such as replacing 'www' with 'dl' and 'dropbox' with 'dropboxusercontent', and reinstalling the entire pack! I don't know which other host to use, since I have always been using Dropbox for hosting modpack files. I even tried to upload the file to another Dropbox account! The recommended Copy.com site is no longer available, so I am really lost right now. Any help would be greatly appreciated! Thanks in advance.

EDIT: I tried to switch back to an older update of the pack (though I generated a new URL for that one), it didn't work either. 

 

~Henriko

Edited July 23, 2016 by HenrikoMagnifico