In case anyone is running into the issue of trying to install Angry Birds Rio (available now at the Amazon Appstore) on your Android phone and all you get is the "Application not installed" message here's how to solve it:

- Connect your Android phone to your PC to open the SD card. 
- Cut the android_secure folder and paste it to your PC (in case you might needd to put it back). Your phone will recreate this folder. NOTE: I've been told this is the wrong way to do this. The right way to do is to go into the android_secure folder and delete the smd12tmpl.asec file. I did it the way I stated before and I didn't loose anything but I figure I warn you before encouraging you to do this.
- Disconnect from the PC and re-downloaded Angry Birds Rio. 
- It now successfully installs!!

And that my friends is how you do it :{D


Thanks to drumgal98 from AndroidCentral.com for this bit of info (http://forum.androidcentral.com/htc-evo-4g/70611-cant-install-angry-birds-rio-2.html)

I'm a big fan of Angry Birds. I usually like to keep this blog on the Tech Side of things but I figured I should let people know about the issue I ran into with it. 

This last weekend there was an update to the Angry Birds on Android and as soon as I heard about it I went and downloaded it. Unfortunately it didn't update for me, it kept giving me Unknown Error -18. I wanted to play the update but it wouldn't update! I restarted the phone, tried it through WiFi, 3G and nothing. 

Then I remembered that my friend John at work had a similar issue when the app first came out. To get it to work all we did was unmount the SD card (Settings> SD and Phone Storage> Unmount SD Card). Try updating it again Once the phone was up and running I downloaded the update and it updated with no issue. I still had all my high scores and such. 

I guess the issue was that the Angry Birds App had been moved to the SD card and it could update it from there. Now that I had removed the card it updated (the highscores are stored in the phone itself, not the SD Card) without an issue. Once the update finished I shut down the phone and put the MicroSD card back in and move the app again to the SD card so I could save some space from my phone. 

And that's how you do it :{D