Getting "cannot install update" error when installing update

Trevzor: Heyo!   Try running the launcher with the integrity switch:
 To turn this option on please right click on your Launcher desktop shortcut and choose properties. In the target field you should see the following or similar  "C:\Games\World_of_Tanks\WOTLauncher.exe"   I would like you to add the integrity switch to the end of this line so that it reads as "C:\Games\World_of_Tanks\WOTLauncher.exe -integrity"   Please click apply, then ok to close the window.   We would also like you to run the launcher with administrator privileges . To do this please right click the shortcut again and choose "run as administrator"   If this does not help, send in your information to support so that we can do a more in depth investigation to try and get you back into Tanks.   Good luck!