When you say you're cropping your video, do you mean that you've trimmed off the edges and then expanded the video to fit the video frame?
If so, that would explain your blurriness, since you're stretching the video beyond its resolution.
It also could be related to the WMV settings you're using (more compression means a blurrier picture) and if you're viewing the file at 100% zoom in your media player.
I had used the crop tool and only trimmed the left and right sides. Although I had tested this without cropping and just saving as I had done before and it STILL is blurry...
I tried saving at different sizes and did a screenshot to get the correct ratio from the video but still no luck.
Just this video should be no different from the previous ones but saving seems to cause blurriness...
I'm sorry. Based on what you've told me, I know of no reason this would happen.
What were the exact settings for your .WMV Export/Share?
What are your Project Settings and the Export resolution settings?