i agree, IECore is really a pain in the a**. This is how microsoft works they make very heavy resources, and than blindly alot of applications depend on it. Thats why i like linux programs they dont depend on such resources, they are light, most of them support plugins, they are cross-platform. Its better to have lots of small aplications that only open when u need, than having some very bloated resources where all programs depend on. It really seems weird to me that winrar would require such a component IECore... hopefully there is a winrar replacement for linux, that doesnt depend on IECore