I wish I could help, but I'm having the same issue. I've never been able to create a handrail or a ladder. The macro for the ladder starts and lets me put in 3 points and then locks up the program and gives the message "Error in RbctAMacro_Activate" Could not find the specified object". At this point I have to Ctrl-Alt-Del to get out of the program and start over.
When I try to run the handrail macro I get nothing other than "RBCT_LAST_AMACRO" in the command bar.
We can't be the only two people in the world having this issue (can we?).
I'm assuming there must be a bug in the program. Have you seen a patch, or figured out anything that works?
I have also reinstalled the program and rebooted many times to no avail.
Any assistance is greatly appreciated.
Thanks