the latest patch doesnt work for me

So I had not played tf2c for a while. Started the game and saw there was new patch. So I exit the game and downloaded TF2CDownloaderWindows.exe. Did choose the apply patch options. Result: both tf2c and normal tf2 stopped working. Nothing happens when I try to start tf2c. Tf2 alot of errors.

So next step was to uninstall tf2c and reinstall it from scratch.

Now I get a popup saying Engine error and Failed to apply client patch! Normal tf2 seems to work this time though.