Rigorous Check.

Clocker/CLParentPanelController.m

@@ -66,9 +66,14 @@ NSString *const CLYesWithExclamation = @"Yes!";
 - (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSKeyValueChangeKey,id> *)change context:(void *)context
 {
     if ([keyPath isEqualToString:CLDisplayFutureSliderKey]) {
+        
+        if ([change[@"new"] isKindOfClass:[NSNumber class]])
+        {
             self.futureSlider.hidden = [change[@"new"] isEqualToNumber:@(1)] ? YES : NO;
             [Answers logCustomEventWithName:@"Is Future Slider Displayed" customAttributes:@{@"Display Value" : self.futureSlider.isHidden ? @"NO" : @"YES"}];
         }
+
+    }
     else if([keyPath isEqualToString:CLUserFontSizePreference])
     {
         NSNumber *userFontSize = [[NSUserDefaults standardUserDefaults] objectForKey:CLUserFontSizePreference];