IIRC, the Rubber Tree plantation and harvester were specific to IC2 rubber trees in older versions; more recently, however, the normal arboretum and logger support multiple tree types (including IC2) rather than just Oak like they used to; similar things were done with other specific planter/harvester blocks as well around the same time. The old items are still present but not craftable.
Also, if you use the Auto Tree Tap, it will fully harvest the resin spots on the logs (obtaining slightly more resin from them, but removing them so they will not regenerate). In addition, I believe the resin harvested and dropped by the tree tap is collected by the logger and not the tree tap.
But, as it's already been mentioned; you can just skip the tree tap if you want and just feed the rubber wood blocks to an extractor and before long you will have more than enough rubber for most needs.
Alternately, I recommend just setting up a manual rubber tree farm (or perhaps using the Misc Peripherals tree tap turtles)