[MiKTeX] update problems again

[Gyorgy S. <Gyo...@un...>]

dear all,

i have wanted to update my miktex installation
in the directory c:\Program Files\MiKTeX 2.6
this morning.

what have i done:

1. i downloaded the latest setup file:
               setup-2.6.2718.exe
2. i started the setup file and selected the complete downloading
   into my local repository
               d:\archive\miktex26 
3. i started the update wizard and got a list of names. however i was
   unable to select
            miktex-runtime-bin....  28-may-07
4. in spite of that i run the update wizard. everything went smoothly.
5. when ready i started the update wizard again. this time the list
   offered contained only one name, i.e. the name of the file i was
   unable to select for the first time:
           miktex-runtime-bin....  28-may-07
6. i run the update wizard but got the error message

    MiKTeX Update Wizard Report

  Version: 2.6.2658
  Date: Thursday, June 14, 2007
  Time: 12:46:04
  updating package definition directory ("C:\Program Files\MiKTeX 
2.6\tpm\packages")...
  installed 51 package definition files
  opening repository E:\Archive\miktex26...
  repository type: local package repository
  loading lightweight database file...
  starting package maintenance...
  installation directory: "C:\Program Files\MiKTeX 2.6"
  package repository: E:\Archive\miktex26
  DBlight digest: 162ac39ab33da853831791c74d63136a
  going to install 22 file(s) (1 package(s))
  unregistering C:\Program Files\MiKTeX 2.6\miktex\bin\MiKTeX206-core-PS.dll

  Error: The operation failed for some reason.

 i assumed these problems would cease to exist if i install miktex
 into the directory
 
                      c:\Program Files\MiKTeX 2.6
                     
 can anyone tell me what is going on? please help. thank you for any
 comment, explanation etc. in advance
 
 sincerely yours
 g. szeidl