Today I need to work with 3 instances of Microsoft's Expression Blend 4 and I noticed that DisplayFusion shows the second instance with a very low-res icon in my taskbars.
The first and third instances are fine and both are using the high-res icon.
Sorry for the late response on this. Could you give the latest 4.1 Beta a try and let me know if you still have issues with the Expression Blend 4 taskbar iccon?