This issue is already closed and is probably not the best place for help (it is less likely to be seen than other methods). If you are having problems and need help, please post to the forums. If you have found a bug please create a new JIRA.
To perhaps answer your question. You may be running into a known Gradle issue (GRADLE-2034) Try renaming your local maven repository or deleting the artifacts from your local maven repository that cannot be found. If this does solve your problem feel free to just comment back. If it does not solve your problem please use the advice above.