solution for error 75 path/file access errpr

I have installed pgAdmin II v1.4.12 on my WinXP computer using
the administrator account.

When I try to connect to a database-server using my own user-id,
I get this run-time error '75': Path/File access error, and pgAdmin
quits. When I log on as administrator I can connect to the server
and everything works fine.

What can I do to run pgAdmin under my own account?

Sincerely
AMOL