Hi,
during the last weekend SQL Server Management Studio Setup drove me crazy prompting up the following error few seconds after launched it on Windows 7.
TITLE: SQL Server Setup failure.
------------------------------
SQL Server Setup has encountered the following error:
Invoke or BeginInvoke cannot be called on a control until the window handle has been created..
------------------------------
BUTTONS:
OK
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TITLE: SQL Server Setup failure.------------------------------
SQL Server Setup has encountered the following error:
Invoke or BeginInvoke cannot be called on a control until the window handle has been created..
------------------------------BUTTONS:
OK------------------------------

The solution of the problem is easy if you know it 😉

Solution: launch the setup and when the error message box appears, just copy the temporary folder C:\{GUID} into your desktop and then close the error message box. Launch again the setup from your desktop directory you just copied and magically the setup does not prompt again any error message!

In order to easily complete SQL Server Management Studio 2008 installation I suggest you to read the following article which describes the steps: http://kendalvandyke.blogspot.com/2009/01/sql-server-management-studio-2008.html

Marzio.