I have a macro that calls and runs another macro at a certainpoint. I use the second macro to delete all the blocks in adrawing. The main macro can be used by people running 2006 - 2009.The second macro can only be called and run by versions 2008 and2009. The commands to select blocks in drawings changed after 2006.Everything works great using the RunMacro command, for a while. Ican execute it three or four times without a problem and then thefifth time it crashes. I'm guessing that I'm not clearing orclosing objects, variables or the second macro correctly. Cansomeone explain how I would do this? Thanks.SolidworksApi macros