Can't install on OSX, install button disables then re-enables?

Hey guys, hopefully someone can help me out, I have just moved to mac recently and am a bit rusty!

Basically anytime I try and install anything the 'Install' button will disable when I click it (as if it is about to install the program) and then just go back to it's previous stage of allowing you to click it, this process just repeats itself and I can install anything.

I remember looking this problem up before on another forum (I cant remember what I typed in so this is why I am here). Last time I deleted a file in my library (I think!) and it all worked.

If anyone would give me some help on this I would really appreciate it!

Thanks!

-Nick

G'day and welcome to the forums.

How about some advice on the model of the machine and the OS you are trying to install otherwise we are flying blind? Question 2 what discs are you using for whatever OS your are trying to install - are they original discs, full retail install, or silver grey discs from another machine? Question 3 have you partitioned and formatted the hard drive?

I found the solution finally on this forum thread:

Can't install updates after upgrading to Mac OS X Snow Leopard - Super User