problem printing .dwg to .pdf in AutoCAD LT 2008

[tarp72]

I have problems printing a pdf from a drawing in AutoCAD LT 2008.  Every day or everyother day I seem to need to update Adobe Acrobat (Windows Vista).  I update Acrobat, shut down computer and printer and restart.  Usually it works but is a total hassle.  Now I am running AutoCAD in Paralles on a Mac Book Pro and having the same problem but now I can't fix by udating and restarting.  I get the error message: "Adobe PDFcreation cannot continue because Acrobat is not activated."  Then it starts up my Adobe Acrobat 8 Professional, which does nothing to fix the problem. 

[bgingerich]

Sounds like adobe is like autodesk in that it needs an activation code or some other form of authentication.  You say Adobe opens?  Search the menus ( maybe in 'file' or 'tools'->'options') for a place to run activation of Adobe. 

If that doesn't work try this site for help: http://www.adobe.com/products/activation/.

[pendean]

Why don't you just use the AutoCAD built-in PDF driver?