The preferences of Time Machine crash when I click options. This is what I did:
I have a new hard disk to back up. I connected the hard disk to my iMac (Mac OS 10.9.2) I accept the invitation to dedicate the disc to Time Machine. I open the preferences, click Option and I try to exclude some items from back ups. I select some files and I click Save. The circle with colors moving appears meaning that is thinking, but it never ends.
I force Quit Applications and select Preferences. I put Time Machine off. I re start the computer. I open again the Preferences > Time Machine. But when I click to option it gets stuck again. I see the files that I excluded from back up and the sentence "calculating size of full backup..." But the circle with colors never ends.
What can I do?