Anyone else finding SF4 painful?

1) Has anyone managed setup SF 4 with custom User Controls that worked in SF 3.x?

2) Has anyone managed to create a SF4 on a dev server and then migrate to live without getting the following after you have logged in?
You were automatically navigated form "/sitefinity" because you are not authorized to access that page!

I am thinking of ditching SF4 as it's pretty much unusable.

Also, downloaded the migration tool, but that doesn't even build

1) I guess this is a license file issue, because I have copied all the files from one site to another.   What do I need to do to have a development version and then publish to live?

Hello Daz,

If you use some classes that are specific for 3.x this code will not work in Sitefinity 4.0. I think that this is the problem you have.

Best wishes,
Ivan Dimitrov
the Telerik team