I have created a drawing for making a block library for mysself. Its very basic, some piping symbols in 2d for 2d drawings. Problem I have is when I create tool palete from my block drawing (simply in "design center" I press on my block dwg to create a tool palete from it), after few actions with it (like inserting required blocks on my drawing) I get my CAD to crash. I double checked everything, like my blocks are created on layer 0, linetypes and weights, etc are made to be 'by block' within that block. I added my block file here. Could someone please have a look and tell me what I am doing wrong. And if someone can be asked, could tell me whats the best way of creating your own block library: save blocks separately as drawings or beter to have all blocks saved in one dwg, etc...
Thanks a lot, Dovy