have downloaded a couple of dynamic blocks from this site, but none seem to work!just show up as regular lines. what is the solution. Thanks!

Hello MaddCadder_1, dynamic are not working with your LT ( access to the different visibilities ) but if you know somebody with an full version you can eventually ask for a copy with all the visibilities of each block.

Right-click the block and choose Block Editor. Select the attributes (use the QSELECT command if there are many). In the Properties palette, change Invisible to "No." Close the Block Editor and save the block.