You have a number of points you brought up in your last post so let me address them in the best possible order (I think...).
Before you uninstall or update anything....can you please do the following for me?
On the WLM and YH main menu can you choose Help/About and find the version you are using for both of these programs? Please post that back here. Of course, it's always best to have the latest stable build, but I'm not convinced yet you don't have some spyware or malware that perhaps isn't being picked up by your scans and I want to be 100% sure you need the update it's claiming you do.
As for uninstalling and reinstalling....If I'm correct and there is malware on your machine, uninstalling and reinstalling will not fix the problem. That said, if you're determined to try and get it working right away....uninstalling and reinstalling won't hurt anything either. But if you choose to do so please grab the latest builds from
Filehippo so we can be sure you've got clean downloads. I really think this is a bit drastic at this point and probably won't solve the problem at all. If it were just one program I *might* think it would help, but with both exhibiting the same problem - I'm still leaning towards malware.
We'd all like to believe ads are safe to click on, and for the most part, on something like Yahoo it shouldn't be a problem as I'm sure they screen what they put there. However, if some little nasty gets on your machine, you may think you're clicking on a valid ad when you aren't. So my best advice is just to be cautions when doing so. You can't worry about every ad, and certainly not ones showing in a window you trust - but getting a blank screen when you did it makes me suspicious of it for sure. And certainly if someone you don't know sends links via IM don't click them - be extremely cautious. Even if you get one from a friend, if you have any doubts, stop and ask them before clicking on it.
Now...back to the actual problem. In addition to telling me which versions of YH and WLM you have. I'd like you to please grab HiJack This from the same Filehippo website. After you've installed it, make sure your browser is closed, and run it, choosing the save a logfile option. It will then scan your machine and open up a report in notepad. Please COPY and PASTE it in a PM to me. It may take more than 1 PM to get the whole thing but I need the entire log. Please DO NOT attach a file, I won't open it - it needs to be pasted into the PM for me. I'll take a look at it and see if I notice anything that seems out of place in the HJT log.
We may still need to try one other thing before I would really go for an uninstall and reinstall of either program but lets start with this. Be patient we'll work it out.