[CCleaner ccsetup 5.01, 5.02, & 5.03 locking up.]

I've been unable to install 5.01, 5.02, or 5.03 CCleaner. (I'm still running 4.18.)

 

I've been downloading off of filehippo link given and I have no problem installing CCleaner on my home machine running Windows 8.1.

 

What happens whether I run as administrator or not on Windows 7 on my workstation at work.

 

1. Starts installing.

2. Asks for permission to run as administrator (if not starting as administrator).

3. Click Next & Install for a default installation.

4. Green bar starts moving and stops at 2 cm.

5. An icon "ping.exe" shows up on my desktop with a signature from C3 SoftWorks, Inc. and version 3.0.0.0.

6. Clicking on the "Details" says, "Please wait, installing CCleaner..."

7. Nothing happens afterwards. I can leave it in this state for a few days, but I eventually have to use task manager to kill the process.

 

 

Questions:

1. Why does CCleaner install ping.exe?

2. Is my company's firewall blocking some communication which stops the installer in its tracks?