Upgrading to 10.0.1 error

[MarkusF]

Hello,

i have a vServer by Strato Germany with Ubuntuu 8.04 and Plesk 9.5.3
Now i have tried to make an upgrade to version 10.0.0 or 10.0.1
But i allways became the following error messages:

The following product versions are available:

1. [*] Parallels Plesk Panel
2. (*) Parallels Plesk Panel 10.0.1
3. ( ) Parallels Plesk Panel 10.0.0
4. ( ) Parallels Plesk Panel 9.5.3 (currently installed)

5. [ ] Parallels Small Business Panel

6. [ ] Sitebuilder

N) Go to the next page; P) Go to the previous page; Q) Cancel installing
To select a version, type the respective number;
Select an action [N]:

You have the product version Parallels Plesk Panel 9.5.3 installed.
Do you want to upgrade it?

Y) Yes; N) No
Type Y for yes, or N for No: Y
File downloading PSA_10.0.1/plesk-10.0.1-ubt8.04-i386.inf3: ERROR: Failed to download the package https://autoinstall.plesk.com/PSA_10.0.1/plesk-10.0.1-ubt8.04-i386.inf3:
The requested URL returned error: 403
Not all packages were installed.
Please try installing packages again later.
Please resolve this issue and try installing the packages again.
If you cannot resolve the issue on your own, contact product technical support for assistance.

Whats wrong?

Greetings,
M. Förg