Mouse Wheel problem in Logic 9

I’m using the latest tip. I got the feedback that the slider of our JUCE plugin get invisible after they control the sliders with the mouse wheel and playing around with the plugin for a while. I got following log output:

8/17/12 2:14:55.000 AM kernel: IOSurface: buffer allocation size is zero 8/17/12 2:14:55.000 AM kernel: IOSurface: buffer allocation size is zero 8/17/12 2:14:55.000 AM kernel: IOSurface: buffer allocation size is zero 8/17/12 2:14:55.000 AM kernel: IOSurface: buffer allocation size is zero 8/17/12 2:14:55.000 AM kernel: IOSurface: buffer allocation size is zero 8/17/12 2:15:11.000 AM kernel: IOSurface: buffer allocation size is zero 8/17/12 2:19:23.866 AM Logic Pro: -_continuousScroll is deprecated for NSScrollWheel. Please use -hasPreciseScrollingDeltas. 8/17/12 2:19:23.866 AM Logic Pro: -deviceDeltaX is deprecated for NSScrollWheel. Please use -scrollingDeltaX. 8/17/12 2:19:23.867 AM Logic Pro: -deviceDeltaY is deprecated for NSScrollWheel. Please use -scrollingDeltaY. 8/17/12 2:19:31.875 AM Logic Pro: unrecognized button type 7 8/17/12 2:19:31.881 AM Logic Pro: unrecognized button type 7 8/17/12 2:19:37.580 AM [0x0-0x41041].com.apple.logic.pro: getChunk, Writing host chunk out to path / 8/17/12 2:19:37.633 AM [0x0-0x41041].com.apple.logic.pro: getChunk, Writing host chunk out to path / 8/17/12 2:20:10.103 AM [0x0-0x41041].com.apple.logic.pro: objc[477]: Object 0x143f3e2c0 of class __NSCFNumber autoreleased with no pool in place - just leaking - break on objc_autoreleaseNoPool() to debug

Anyone has an idea if this scroll wheel messages point to a serious issue that could lead to vanishing JUCE GUI components / invalid values?

http://www.rawmaterialsoftware.com/viewtopic.php?f=4&t=9677

I’m sorry, didnt find the other post. Maybe i gave up searching to fast.