Client got damaged after 7.3.5 update

[gipcu]

Hi

I wanted to update existing client, but to be sure i made a copy of 7.2.5 and run update to 7.3.5 on this copy.
It got updated nicely, but with next run of 7.3.5 i got:

Code:

Your World of Warcraft installation is damaged. To learn how to repair it, see: https://battle.net/support/article/6572

So i was like meh, lets just play 7.2.5 for now, but magically this client got damaged too...

in Client.log last rows are:

Code:

1/30 15:37:10.806  Loading Screen : Loading : Files Read 301 : Bytes Read 6612206 : Elapsed MS 785 : MBytes Per Sec 8.033 1/30 15:37:10.806  Loading Screen : XML Loaded 100% 1/30 15:37:10.806  Loading Screen : World Loaded 100% 1/30 15:37:10.806  Loading Screen : Spell Loaded 100% 1/30 15:37:10.848  Loading Screen Disable 1/30 15:37:10.892  Spellbook : Make Models Local Begin : 174 1/30 15:37:10.936  Spellbook : Make Models Local End 1/30 15:54:58.039  Client Object Manager Destroyed 1/30 15:57:21.247  Client Destroy

any suggestions beside downloading new client?