IIS6 shared to dedicated hosting moving problem

I am moving my website shared hosting to dedicated hosting but some page
stop working and it throws exception
http://www.biraa.com/motor/ilanver/motosiklet.aspx

The process cannot access the file because it is being used by another
process.
Line 172: File.Move(ImagePath,
System.IO.Path.ChangeExtension(ImagePath, ".jpg"));

this happens when I try to upload a file to server. it hasto do something
about configuration because this code is working at
http://www.mpazari.com/motor/ilanver/motosiklet.aspx and its hosted in
godaddy shared hosting.

thanks in advance.