BUG #4628: services doesn't start

The following bug has been logged online:

Bug reference:      4628
Logged by:          nico franken
Email address:      n.franken3@kpnplanet.nl
PostgreSQL version: PostgreSQL Plus
Operating system:   Windows7 Beta Ultimate
Description:        services doesn't start
Details:

Dear Sir,

I have upgraded from Vista to Windows7 Beta Ultimate.

On Vista PostgreSQL worked succesfull.

But on Windows7 I have got unsuccesfull installation message.

PostgreSQL Services doesn't start and don't complete installation. (err 2
can't find file logon)
(err 5 Access denied!)

May be You are busy with an Postgres Plus Beta version for Windows7 Beta
Ultimate?

If so please let me know because I need my databases to continue my
business.

Or is there a link to solve this installation problem.

Than You in advance.

N.Franken
The Netherlands.