i found out that Bitcomet 1.35 fails to create files, if the filepath is too long, i dont know how long exactly but here is an example:
F:/Program Files/Skyrim Mods/Bash Installers/STEP/2.I. Clothing & Equipment/2 - AMidianBorn Book of Silence/aMidianBorn - Content Addon-24909-1-2/textures/AMB Variants/armor/ebonyvariants/ebonyGold/m/ebonyarmorbootsm.dds