One of my colleagues today posed the question, why doesn’t my block explode? Firstly, I thought this was impossible, but I was wrong!
The first issue is check that it is not a group, they are very similar on the surface and can be mistaken for blocks and visa versa! X or explode cannot work on groups.
However X or explode can sometimes not work on blocks. There is a setting for blocks that I had never noticed under the block creation box, called “allow exploding”, uncheck this and your blocks cannot be exploded!
In order to get around this, bring up the block edit dialogue with nothing selected.
Then select the offending block in the list and check the “allow exploding” box. Now click OK. Yes to redefine. Note this might cause some issues with placing!
Now the block can be exploded!