I must apologise for that.
Double checking all timeouts are removed after the betas is supposed to be done during QA testing to ensure this doesn't happen, but apparently that did not do happen in this case.
There will be an update out ASAP to sort this. Most people are back on Thursday so I have high hopes it will be done by then.
For now you can either set your date back before launching SKS, or SKS7 will work just fine on Win8. No need to install it on 7 or Vista.