Cannot install Mountain Lion due to an application error

I have a late 2010 MBP. I had 10.6.7 and had updgraded it up to Mountain Lion.
Lately, I was having some issues with my computer (i.e., failure to startup, or move past the grey screen), so I decided to reinstall my system.
I accessed the partition, and tried to restore my system to a previous backup, but it didn't work. After trying a few times, I decided to reinstall Mountain Lion to my system. However, each time I try to run the setup, it gives me an error which says "Cannot run installion due to an application error. Please try again later."
Of course, I can't downgrade my mac 10.6.7 as well.
Help?

From the Installer menu bar in Recovery, select
Window ▹ Installer Log ▹ Show Errors Only
What error messages are shown?

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