have tried severalk times with new downloads to install the latest ccleaner.
I get the same message:
unable to install ccleaner64.
for that file
First have a read here and see if anything helps.
http://forum.piriform.com/index.php?showtopic=5739
Can you give a bit more info such as what operating system you are running, where you are downloading Ccleaner from, which build (slim full or portable)
I downloaded from 2 different main piniform suggested sites.
I am running vista.
CCSETUP504 is the file
The onlything i dont recognise is consent .exe