Installation problem

Yesterday I did a mac os x software update. I checked some of the check boxes and then it did the downloads.

Today I installed a new application on my mac.

It displayed a message about requiring restart in order to complete installation.

So I restarted. I get a message that asked me to press 'ok' if I wanted to finish some software installations.
This time my mind thought about the previous made mac os x software updates. So I thought that the system asked me if I wanted to allow make more new software updates before finishes the restart and loading again the mac os x. I thought that it would take a long time to finish all new downloads from apple so I pressed 'no'.
It was just a wrong thought!

Then the mac os x finished the restart I get into to mac os x again.
But the application I wanted to be installed was not there!

I suppose I should have pressed yes, it was about finishing the installation of my application.

Then I looked at little snitch preferences but my negative answer to allow installation was not there.

So I suppose somewhere in the system is recorded my negative answer to the system prompt.

I tried to install it again but it did not asked me again about finishing installation. I make the install, it displays the message for restart, I restart, but no application is installed ( I also searched for it with spotlight).

Can you please help me delete somehow my negative answer from the system so I would make a good installation once again?

A scanner application for scanning.
It seems that I should allow mac os x to make the appropriate installations after the restart but it was the first time for me to see such a message, I was confused, I pressed no, and then the program never installs.
I run the installer, it displays the message that the installation finishes and I should restart, I restart the mac, no messages about installation appear on my screen (as it was the first time that I pressed 'no'), I login and I cannot found the program installed(/applications folder, as I could see the older/previous version of application). I also searched with spotlight, I did not found it being installed.