When I use changespace command, below error message is appear. How to solve that problem?Command:1 object(s) changed from  PAPER space to MODEL space.Error loading file: ai_utils.lsp.File not found.bad argument type: stringp

[QUOTE=maungthantzinoo]When I use changespace command, below error message is appear. How to solve that problem?Command:1 object(s) changed from  PAPER space to MODEL space.Error loading file: ai_utils.lsp.File not found.bad argument type: stringp [/QUOTE]
 
Make a repair in this way.
 
Go to Control Panel-->Add or Remove programs-->AutoCAD 200x-->
Change/Remove click on change and use Repair Option.
 

Dear Ing Arben.Allaraj,Thks for your reply. But still got that problem.

 
 Try to find your file in your system and move in Supports search path files
 
 If this doesn't exist i have attached the file.
uploads/20080528_093540_ai_utils.lsp
 
Write again.

Thks alot 
Ing Arben, but still got that problem..Our IT department come and reinstall AutoCAD, but in my user account, cann't use changespace command and superhatch command.

 
 I am afraid the during installing again .
The your Registry of AutoCAD didn't change  after new installing.
So before the reinstalling clear registries of AutoCAD.
 
Or try  doing it  in safe mode as Administrator.

Hi maungthantzinooI don't know actual solution. But use following link i hope got solution.http://www.faqs.org/faqs/CAD/autolisp-faq/part2/Form hexagonwww.hexagonsoftware.com 

Thank alot  hexagon2008