sbt cannot resolve ensime-sbt-cmd in a Play2-Scala project

问题

I'm trying to configure Sublime Text 2 to better support working with Scala and Play! 2 Framework by following instructions from http://engineering.panaxiom.co.uk/post/34631917299/sublime-text-2-with-sbt-and-play-2. (I made just one change: I updated the plugin version to 0.1.1.)

I was able to almost complete the steps given in the tutorial but the second one always fails (generate ensime config file) simply because sbt is unable to resolve ensime-sbt-cmd plugin (when I enter a project directory and execute play command). I'm not able to find the cause of the problem but sbt gives me an error like:

[error] Server access Error: connect: Address is invalid on local machine, or port is
not valid on remote machine url=http://repo1.maven.org/maven2/org/ensime/
ensime-sbt-cmd_2.9.2_012/0.1.1/ensime-sbt-cmd-0.1.1.pom

(The command output shows other urls to: scalasbt.artifactoryonline.com and repo.typesafe.com, but the maven repo url exists). After that, some warnings are displayed, again with urls of repositories.

sbt is able to resolve all other plugins or dependencies that the project has (I just finished create the project, so there are no other extra plugins or dependencies except from ensime-sbt-cmd).

I tried to change scalaVersion (on project_dir/build.sbt) but it make no difference. sbt version is 0.12, scala version is 2.9.2.

Someone knows what I can do to solve this problem? Is it possible to be something related to Java 7 on Windows 8 64 bits machine and Kaspersky Internet Security 2013? With this combination of softwares I was unable to launch Eclipse Marketplace and Netbeans plugins updates until I configured KIV exclusion rules with Java commands (java.exe, javaw.exe, javaws.exe).

Thanks and sorry because of the long text.