While I’m still busy working away on pr5, I backported a bunch of the new content to 1.2.3 and present it here as RedPower 2 Prerelease 4e. Download button up top, like usual.
In addition to 1.2.3, there are a bunch of new blocks, and more bugfixes than I can count.
Added Magtubes, Accelerators.
Added Restriction Tubes.
Added Blulectric Alloy Furnace.
Tubes no longer eject items, use a Transposer for deliberate ejection now.
Battery boxes can be powered with redstone to prevent discharge.
Retrievers now have sliding window.
Fixed the scheduler bugs.
Fixed the recipe for the Thermopile.
Fixed Deployer glitches.
Lots of other bugfixes backported from the pr5 branch.