I take it that this is out of date, and that "Sencha Touch 2 SDK" has been replaced by the latest Sencha Touch 2.1 download and that the "SDK Tools" have now become the "Sencha Cmd 3.0" - would that be correct?
Sensha should maybe have ensured their packaged documentation was up to date before releasing. There seem to be quite a few people mistakenly trying to use the SDK Tools instead of the new Sencha Cmd and are therefore struggling because of this.