ms_ratio

hey, im sure it's a easy fix but this is my first modpack pack I may getting this error: Error unzipping a file for the following pack: Ratio's Modpack Attempting to extract file ratios-modpack-1.0.zip,but it did not exist please consult the author platform for modpack link:http://api.technicpack.net/modpack/ratios-modpack direct link to modpack: https://www.dropbox.com/s/ilakhxsc1ar4zp9/modpack zip.zip?dl=0 please plz