Error description:
-If you receive any error messages while opening the software (can include .net framework errors)
-When trying to login in the software, you are getting "Check internet connection" or "Invalid username/password"
-Videos are not populated (added) in the Mass Video Blaster download module

-Video Marketing Blaster is not showing any data

Download the MS .Net 4.5 Framework setup from:

Download MS .Net framework 3.5 Sp1 setup from:

Install both files that you just downloaded then restart your PC.