The last thing i could say is:
* close Rainlendar2
* Download again the "Shadow4 - Double Sized.r2skin" file.
* Rename user folder to something else.
* Start Rainlendar2 again (to make a full fresh user folder)
* Install r2skin
If this works, there is something wrong in the ini file. If not... sorry, i'm out of ideas
The differences between Double Sized and normal one are only images and locations
. The calendar drawing mode is the same. I didn't touch that part. So, if Shadow4 looks ok then Double Sized should be looks the same