A client update is not required for update #17a, but it is recommended. Note: If you already updated to #17, updating to #17a will be incremental, so it should finish in less than a second. Just a quick update to one of the GregTech configs since all the UUM recipes were overwritten and enabled. -edit- And thanks to flutter for making me think I screwed up and the recipes were still enabled....I nearly had a heart attack.
