Flash Player for Mac version 10.4.11 Intel

Help please!
I downloaded Adobe Flash Player (somehow it disappeared from my computer). The .dmg file appears on my desk top and when I double click, it opens and goes through the various screens. But when I come across the Adobe Flash Player.pkg and try to open this, it just does this weird flash thing in the finder and then nothing happens.
Has this happened to anyone before?
How did you solve the problem?
Thank you