Yeyh, I moved the Crop-matrons up one block, and presto! they work. I also removed all the weed-ex. Next step is to remove the covers over the beds, to improve air-quality. My reason for putting them there was to prevent people from trampling the crops, since most players on my server has powersuits, with easy step, that treats a single block as stairs, and thus it's very easy to accidentally walk on the beds...