The big fix that we've put into 8.0.1, as far as .NET support is concerned (and what else is there, eh?), is the ability to get the output from array parameters.
In LV 8, we tightened up the invoke node so that it correctly mapped to a .NET method signature, but we did too good of a job. If you pass an array into a .NET method, we correctly reported it as an input only parameter.
Of course, the problem is that, in LV, the array is copied into .NET - thus any changes made to any elements in the array (say, for example, with a Read(byte[]) method), would be lost. *sigh*
But it's no longer a problem *smile*, so download away. Of course, you'll need to mass compile due to other changes, so make sure you kick that off before you go home for the night.