I try a CRM 4 to CRM 2013 organization upgrade. I run the import organization wizard in deployment manager without an error two times: CRM 4 to CRM 2011 and CRM 2011 to CRM 2013.
But if i try to open the organization in Browser, i got only a blank page with an empty blue bar:

If I use JavaScript Debugger of IE it looks like a null reference exception in global.ashx:

Firefox Debuggere told me Sys.Res is undefined in global.ashx:

The empty organization that was created automatically during installation, is working.
The CRM 2013 has installed Service Pack 1 an Update Rollup 1 + 2 for SP1.
I used google but can not find a clue as to how I can fix this problem.
Can anyone please give a hint?
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