Error number 35603 Invalid key

I am new to pgAdminII and do not understand the following:

(Errors when trying to create tables)
Creating a database succeeds.
Then, when right-clicking it and selecting Create Object - Table
I get a dialog with error in frmTable.Initialise
Number 35603
Description: Invalid key
I press OK en get the Table form.
I can type a name but not an owner
I then add one or two columns
But when I press OK to create the table I get:
error frmTable.cmdOK_Click
Number: 91
Description: Object variable or With block variable not set

I can create the table using SQL but the Table form would be nice :-)

I am using Win2000Pro and have the following (no duplicates):
C:\WINNT\system32\COMDLG32.OCX (ver 6.0.84.18)
C:\WINNT\system32\COMCT332.OCX (ver 6.0.0.8450)
C:\WINNT\system32\COMCTL32.OCX (ver 6.0.81.5)

================
Mr. JP (Petri) Jooste
Skool vir Modelleringswetenskappe
School of Modelling Sciences
Vaal Triangle Campus
Potchefstroom University for Christian Higher Education
South Africa

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