vCenter upgrade 5.1.0U1B to 5.5 fail - SSO install error 1603 when install program import the SSO 1.x data

Hi,

I have a simple physical vCenter Windows 2008 R2 / 8 GB RAM / 1TB HD. Installed a simple 5.1.0 U1B center with a Horizon View 5.2 Composer.

When I try to install the first upgrade (SSO), it fail with error 1603 in the import sequence (see le attached log file), after installing and starting new services...

Some ideas ?

Best regards