One of the biggest advantages of using blocks for repeated content in drawings is their �togetherness� � where one piece goes, the whole thing goes. That unity can disappear in a flash, though, if the block is exploded. Depending on the type of block, this can either be necessary (say, for a detail from your library that you need to edit) or a disaster (anything with attributes). Since the introduction of dynamic blocks (which are especially bad to explode), you�ve been able to prevent blocks from exploding at all. Instead, you�ll get a message telling you the block �could not be exploded.� How do you apply this (wonderful) setting? Two ways. First, when you go to create a new block, there�s a box to un-check in the Block Definition dialog. (I�m also a fan of checking the box above it, to force the block to scale uniformly, but that�s a topic for another day.) Second, for an existing block, there�s a setting in the Properties palette inside the Block Editor. With no objects selected, look for the Block section, and change �Allow exploding� to �No.� Once you have this set for all the blocks that should never be exploded, you�ll be able to breathe easier�no more risk of inadvertent block breakdowns!Go to the original post...