I haven't been able to confirm this with Sherman, but I'd like to pass along another observation or tip to the rest of you.
When you launch WP, then click, "Start World of Tanks" it begins the loading process for WOT. WP responds with "Please wait loading" as WOT shows the startup screens. WP then says, "Waiting authorization" as WOT cycles through the Teen Warning screen and that fiery world of tanks screen before opening the authorization screen.
Before I purchased WP, I was too impatient to wait for all these screens to cycle through, so I would click my mouse to jump quickly through them and get to the authorization screen.
What I have found now that I use WP is that if I do this, quite often an error will occur and force WOT to shut down. But I do not have this problem if I simply wait patiently for all the screens to timeout and cycle through on their own before coming to the authorizations screen.
So here is the tip: Be patient! Do not click through the opening screens. Allow them to cycle through on their own until you get to the authorization screen.