I just downloaded the latest light room version and now my HSL picker no longer works.
This is a known bug in LR CC 2015.10.1 acknowledged by Adobe. Please add your me-too vote and details of your configuration to the bug report in the official Adobe feedback forum: Lightroom CC 2015.10.1: Develop module: Target Adjustment Tools not working | Photoshop Family Customer Community . That will make it a little more likely Adobe will fix the bug soon, and you'll be notified as soon as the bug's status changes.
The only posted workaround is to roll back to 2015.10: Lightroom roll back to prior update version
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