How to fix aborted MAXDB upgrade?

Hi,

I did a systemcopy to Windows 2008 R2 MAXDB 7.6. The first copy went well, I did the upgrade to Maxdb 7.8, very thing fine.

Now I copied the second system to the server every thing until the upgrade to MADB 7.8 went fine.

But while upgrading to 7.8 the upgrade stopped, so that I had to abort it.

Now the first system works fin, but the second system dows not even respond to dbmcli -d <DBID>.

sdbregview shows

sdbverify shows everything fine, besides:

Checking package JDBC

ERR:  Failed

ERR:    Checking installation "Global" failed

ERR:      Checking ACL for D:\sapdb\data\globals\config\install failed

ERR:        ACL entry BUILTIN\Users with rights GENERIC_READ  not found

ERR:    Checking installation "S02" failed

ERR:      Checking ACL for D:\sapdb\data\installations\S02\config\install failed

ERR:        ACL entry BUILTIN\Users with rights GENERIC_READ  not found

ERR:    Checking installation "CL_S01" failed

ERR:      Checking ACL for C:\sapdb\clients\S01\data\installations\CL_S01\config\install failed

ERR:        ACL entry BUILTIN\Users with rights GENERIC_READ  not found

ERR:    Checking installation "CL_S02" failed

ERR:      Checking ACL for C:\sapdb\clients\S02\data\installations\CL_S02\config\install failed

ERR:        ACL entry BUILTIN\Users with rights GENERIC_READ  not found

ERR:    Checking installation "S01" failed

ERR:      Checking ACL for C:\sapdb\S01\data\installations\S01\config\install failed

ERR:        ACL entry BUILTIN\Users with rights GENERIC_READ  not found

As windows service the old SAPDB services for system S02 are registered...

So I think the S02 installation is complete rubbish and I tried to delete it, install 7.6 again, import backup and try an other upgrade to 7.8.

But I can't delete the installation, because the the S02 System is registered!

How do I deinstall the S02 if I can't connect to the database?

How do I unregister the database S02?

Thanks a lot,

Christian