How to download multiple asset bundles in serial order? The error of "cant load 'name' assetbundle as it is already loaded" comes after first assetbundle download. Please help. Needed urgently!

Hello,

I have multiple asset bundles as levels on the server and sound assets in different bundle. However, when I try to download first level assetbundle and sound file serially, the first level downloads perfectly however, when downloading second asset bundle, it throws error"Cannot load cached AssetBundle. A file of the same name is already loaded from another AssetBundle". I use www.loadfromcacheordownload for this. However, when i use simple www call, It works( As the files are not cached! )