When attaching a Redstonecontact to a gantry, the Redstone Power stays on forever. Thats not only on the stationary block, but also the contact moved away still emits the redstone signal on its last position. Tested in multiple directions so that the contact moves away sideways and straight, happens in all cases.

Gantry is used with a sequenced gearshift in the screenshot.

Updating Create to 0.3.2b should fix this

Right, that fixed it ... I actually managed to install the mod on the server and my client right between updates