Wacom tablet. Endless error messages in OS X systemlog
Solution: I have completely uninstalled Wacom's tablet software 6.3.16-12 and switched back to 6.3.15-3. Also, be sure to remove all preferences files including the following leftovers:

/Volumes/MacBook/Library/Internet/Plug-Ins/WacomTabletPlugin.plugin
/Volumes/MacBook/Library/PreferencePanes/WacomTablet.prefpane
/Volumes/MacBook/Library/Frameworks/WacomMultiTouch.framework
/Volumes/MacBook/System/Library/Extensions/Wacom/Tablet.kext
/Volumes/MacBook/Library/Receipts/Wacom/Tablet/Docs.txt
/Volumes/MacBook/Users/yourusername/Desktop/Preferences.wacomprefs
/Volumes/MacBook/Users/yourusername/Library/Preferences/com.wacom.wacomtouch.prefs
/Volumes/MacBook/Users/yourusername/Library/Preferences/com.wacom.wacomtablet.prefs
/Volumes/MacBook/Library/LaunchAgents/com.wacom.wacomtablet.plist
/Volumes/MacBook/private/var/db/receipts/com.wacom.TabletInstaller.plist
/Volumes/MacBook/private/var/db/receipts/com.wacom.TabletInstaller.bom
/Volumes/MacBook/Users/yourusername/Library/Application/Support/com.apple.sharedfilelist/com.apple.LSSharedFileList.ApplicationRecentDocuments/com.wacom.removewacomtablet.sfl
/Volumes/MacBook/Users/yourusername/Library/Saved/Application/State/com.wacom.RemoveWacomTablet.savedState
/Volumes/MacBook/Users/yourusername/Library/Preferences/com.wacom.RemoveWacomTablet.plist


I have spent hours on debugging. These error messages are definitely related to the Wacom Tablet Software update 6.3.16-12. Morever it’s related to random system crashes and strange command click behaviors!