Program crashes when making a block

[R4sso]

This has not happened before. I was trying to make a block of an elevation, no more than 150 objects and the program had a FATAL ERROR; I tryed again and again and always the same fatality

Does anyone know what to do?

Thank you...

I'm using AutoCAD LT 2007

[pendean]

WBLOCK command will make a bloxk too, try it.

If it craahes, it may be an ovject in your selection, or you just need to fix your file.