I installed the pay version "SlingPlayer for Phones" on my brand new LG V20 running Android 7.0. I had the phone for less than two weeks (12 days) and started receiving insufficient storage messages this morning. Upon investigation, the SlingSS_Log.txt file was over 45GB in size. I delete the "app data" and all is well again. I'll check the log file shortly and see what is in it. Never noticed this behavior on my previous devices - Samsung Note 4, Samsung Note 7 and Samsung Galaxy Tab Pro 10.1.