Unable to resolve target 'android-8'

Long story short, eclipse updated ADT & SDK to v20 , which I didn't like and wanted to get back to 18.

So I uninstalled ADT and SKD and donwloaded v18 from

http://dl.google.com/android/installer_r18-windows.exe

and http://dl.google.com/android/ADT-18.0.0.zip

Installed both of them, yet now Eclipse can't seem to find some sdk platform and throws the "Unable to resolve target 'android-8'" error... any ideas what might be wrong?

in android sdk window go to:

tools >> options

will be open a new window and check the option force https:// ....

disable this checkbox

if your network is using proxy conigure it in this window too.

reload or restart the android sdk window and try download again. :)

Right click on project->properties.
Select Android on left panel.
If you see Android 4.0.3 in (Project Build Target), then tick it and click Apply button.
If you don't have 4.0.3 version in Build Targets, then you should install it. to install simply go to sdk manager and click on Android 4.0.3(API 15)-SDK Platform.