Chances are the system variable FILEDIA is turned off.
From AutoCAD help:
To turn FILEDIA back on:Type: Integer
Saved in: Registry
Initial value: 1
Suppresses display of file navigation dialog boxes and the Create New Drawing dialog boxes.
0 Does not display dialog boxes. You can still request a file dialog box to appear by entering a tilde (~) in response to the command's prompt. The same is true for AutoLISP and ADS functions.
1 Displays dialog boxes. However, if a script or AutoLISP/ObjectARX program is active, AutoCAD displays an ordinary prompt.
At the command prompt type FILEDIA. Then type 1.
The following is from this post made by Opie that can help keep FILEDIA set to 1. (Thanks to Tim Creary for the idea for adding this to this FAQ)Code:Command: FILEDIA Enter new value for FILEDIA <0>: 1
An other method for dealing with this issue / problem...Originally Posted by Opie
Missing Dialog Boxes got you down? via Beside the Cursor
Autodesk Knowledge Base:
ID: TS37941 - Options display on the command line when starting a new drawing
ID: TS44816 - Save or Save As dialog box is not displayed
ID: TS65989 - Commands only work from the command line (no dialog boxes are displayed)
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