Postgres 8.3-dev

I am trying out postgresql-8.3-dev1 on Windows XP SP2 and during the
installation, I get the following error during the database cluster
initialization :

Here the log from initdb.log file :

The files belonging to this database system will be owned by user "SYSTEM".

This user must also own the server process.

The database cluster will be initialized with locale C.

creating directory C:/Programmi/PostgreSQL/8.3-dev1/data ... ok

creating subdirectories ... ok

selecting default max_connections ... 100

selecting default shared_buffers/max_fsm_pages ... 32MB/204800

creating configuration files ... ok

creating template1 database in C:/Programmi/PostgreSQL/8.3-dev1/data/base/1
... ok

initializing pg_authid ... ok

setting password ... ok

initializing dependencies ... ok

creating system views ... ok

loading system objects' descriptions ... ok

creating conversions ... child process exited with exit code 1

initdb: removing data directory "C:/Programmi/PostgreSQL/8.3-dev1/data"

Paolo Saudin