I have a few projects that were previously tested to be working in 1 PC.
I\'ve since moved to another Windows XP PC, and I\'ve setup the development tools on this XP
That should do the trick and add Android X.X (version you selected) to your project, and the imported project should start working.
Enjoy.
I think your project does not have project target name or missing. And it's simple go to main menu : project->properties->android
(from left panel) then mark a project target name as you need for your project. After this it should work if not then clean your project like this : project->clean..>select
(clean projects selected below )->
mark your project then click ok
. thanks