Time Machine options not available since I upgraded to Mavericks

Hi,

I upgraded from Mountain Lion to Mavericks. So far so good, but since this, from "System preferences / Time Machine" :

- Clicking the "Options..." button does nothing (means the options control panel to choose ignored folders does not appear)

- Clicking the "Choose a disk..." button has the same effect (means nothing appears too)

The "System preferences / Security" control panel has a similar issue in its "General" tab : after unlocking, choosing to enable the installation of applications from "Anywhere" is denied. The radio button goes back automatically in its initial position. Means either "Mac App Store" or "Mac App Store and identified developers".

Monitoring the system.log file from the Console application shows the same starting lines when clicking on any of the three above mentioned actions. I could provide the full error message but it's veeeery long. The essential lines are :

05/11/2013 14:07:23,513 System Preferences[10288]: -[NSRemoteView beginDeferredSheets] caught non-fatal NSInternalInconsistencyException 'unable to convert NSNamedColorSpace System controlColor to Appareil RVB colorspace' with backtrace (

0 CoreFoundation 0x00007fff8bf4741c __exceptionPreprocess + 172

1 libobjc.A.dylib 0x00007fff8a538e75 objc_exception_throw + 43

2 CoreFoundation 0x00007fff8bf471f8 +[NSException raise:format:arguments:] + 104

3 Foundation 0x00007fff911c7c61 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 189

4 ViewBridge 0x00007fff92a3f65c -[NSSecureColor initWithColor:] + 724

[...]

23 HIToolbox 0x00007fff8ec50cb7 ReceiveNextEventCommon + 479

24 HIToolbox 0x00007fff8ec50abc _BlockUntilNextEventMatchingListInModeWithFilter + 65

25 AppKit 0x00007fff8c21028e _DPSNextEvent + 1434

26 AppKit 0x00007fff8c20f8db -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 122

27 AppKit 0x00007fff8c2039cc -[NSApplication run] + 553

28 AppKit 0x00007fff8c1ee803 NSApplicationMain + 940

29 libdyld.dylib 0x00007fff961ca5fd start + 1

30 ??? 0x0000000000000001 0x0 + 1

)

Note that no error message has been issued during the Mountain Lion -> Mavericks upgrade. Go.ogle search or the support information of this site didn't provide useful information (or did I miss something ?)

Many thanks by advance for any hint.