This happens to me often as well. Usually a case of refreshing the page (ctrl+F5 refresh is better than refresh button) or reloading the page entirely fixes it. Sometimes might take two tries to do it. I've noticed the issue in both Chrome and IE.
If you hit "Go Advanced" and it takes you to a new page, I notice if it was grayed out before, it usually is under the advanced page as well.
The page refusing to load is semi related to the adverts. If you become a paid member it doesn't happen. Since my membership lapsed I occasionally use an ad blocker (would prefer Toymods to have ad revenue but other sites it's more an issue) and I noticed it doesn't happen as often.
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