It seems McAfee has taken it upon themselves to block Kodi... Causes the program to crash and deletes add-ons. Sorry McAfee but this isn't your responsibility, stick to Virus detection and security. Time to move on to better software I guess.
Does it say anything when it blocks ie says it is malware or similar if so easy to clear it up. If so will move this post to the correct area and post steps to clear this.