Problem with Cumulative Insolation Analysis :(

[calmwish]

Hi!

I am a beginner by Ecotect. I learn it with Ecotect 2009.
I had followed Tutorials( http://squ1.org/wiki/Surface_Mapping ), Cumulative Insolation Analysis with Subdivistion in Rectangular Tiles
and I can see same result with Tutorials.

Now i tryed on new Modell to Cumulative Insolation Analysis, with one Building and on ground subdivides Rectangular Tiles.
(please see attached files. there ist Jpg captures and Eco-Save files)

I can get right Result with Analysis Grid and subdivides Points, but no subdivides Rectangular Tiles.

What had I do wrong or missed?
How can I see right result with subdivides Rectangular Tiles?
(I had to try both, everytimes Shade-mask newly to calculate and use existing data. but both same result.)

[calmwish]

OK. I receive from Autodesk Forum the Answer
Problem was Normal-Vector. It was to downwards haha;;