Do you have a Android-SDK Manager?, If so, Update the latest Android Lib’s from the SDK Manager Tool.
If that didnt work,
Then check if the path of Unity3D Studio again, as in:
Is the Link to the Android-SDK Folder Correctly set-up,
And check for the .keystore file aswel, as it is Mainly Required to Export in Android Format.
Note: You can also find a .keystore file in the Folders Somwhere in the Android-SDK,
Should be:
(Root Folder of Android-SDK) ools\apps\SdkController\src\com\android ools
Thats where it should be, if not, Here you have a Spare one i used to Create my Android Games and Export them:
[62430-keystore.zip|62430]
If you still not managed it to make it work, you could try out and test some settings in the Unity3D Export Section, as in: When Unity3D opened, go to ‘File’, next go to ‘Build Settings’, then go to ‘Player Settings’, And then On your right, Look for an Little Android Icon, Click on that, That are all the settings that mostly need to be set before you can Export the game on Android Device’s.
BTW: If you maby forgot, Set the Platform on ‘Android’ First, before Export, go to ‘File’, next go to ‘Build Settings’, And look at that Window for: ‘Switch Platform’, Well be sure to select a Platform first ofcourse.
Goodluck further on with the Problem you have,
Gr.Djni Wlk and the Dev Community of IGS-DB.
