[Steam Cleaning]

I just tried it now again, and now apparently Steam is downloading the required files properly. I'd wager to guess that this was an issue with the Steam client simply not replacing missing files automatically for some of us. So all appears well!

[Steam Cleaning]

This is what is being cleaned in steam by ccleaner

[steam]
ID=2203
LangSecRef=3023
DetectFile=%ProgramFiles%\Steam\Steam.exe
Default=True
FileKey1=%ProgramFiles%\Steam\Appcache\httpcache|*.*|RECURSE
FileKey2=%ProgramFiles%\Steam\Config\htmlcache|*.*|RECURSE
FileKey3=%ProgramFiles%\Steam\Config\cookies|*.*|RECURSE
FileKey4=%ProgramFiles%\Steam\Config\overlaycookies|*.*|RECURSE
FileKey5=%ProgramFiles%\Steam\Config\overlayhtmlcache|*.*|RECURSE
FileKey6=%ProgramFiles%\Steam|*.mdmp
FileKey7=%ProgramFiles%\Steam\Dumps|*.*|RECURSE
FileKey8=%ProgramFiles%\Steam|*.log
FileKey9=%ProgramFiles%\Steam\Logs|*.*|RECURSE

do you know which of these items (listed as FileKey*= ) should not be being removed?

 

It's either:

 

FileKey1=%ProgramFiles%\Steam\Appcache\httpcache|*.*|RECURSE
FileKey2=%ProgramFiles%\Steam\Config\htmlcache|*.*|RECURSE

 

I once deleted those files my self manually and had the exact same problem. I had to reinstall Steam for it to fix its self as it wasn't redownloading them automatically.

[Steam Cleaning]

I'm having the same problem. Took me awhile to finally figure out that it was CCleaner causing it.