Some recent server changes caused the SDK Manager in Eclipse to no longer display any available SDKs for download, and it would not allow you to switch between already downloaded SDK versions.
This afternoon, we released v2.2.1 of the plug-in, which has some tweaks to address this problem. As a preventative measure, we've also added a new feature that will track available SDKs locally so the SDK Manager will continue to function even if there are server or connectivity issues.
This update is recommended for everyone that uses Eclipse as their Connect IQ development environment. To update the plug-in, go to the Help menu in Eclipse and choose Check for Updates.
Thanks,
- The Connect IQ Team