Two Windows 7 Gadgets Stopped Working

I recently renewed my internet security subscription. Immediately after doing so, the Calendar and Weather gadgets stopped working. The Calendar shows up as a blank orange/white square and opening up the Weather gadget will just reveal the "i" information symbol and a X close button, neither of which actually work.

Clock gadget also stopped working but then after an hour later it started working again and has been working since. I have tried deleting/uninstalling the gadgets but that hasn't worked. I have tried several tricks with the Windows command prompt which doesn't work either.

I'm considering using an automatic system restore (I don't have any manual saved points to restore) on just the gadgets themselves. Is that the way to go, or is there something else I could try? I've decided to name it: McAfee. I didn't at first, because it's been my experience whenever I mention a problem and mention an antiviral program.

I mention McAfee because it's an odd thing: I've searched forums and have found that others have had the almost the same problem; except with them it happens when you UNINSTALL McAfee, not renew it. I've also found another possible solution that involves deleting a registry key, but I'm way too nervous to try that.