Copying parts of experiment

Hi Hank,
I asked about importing events / tirals / blocks and you suggested copying them, only when I try to open 2 experiments so I can copy & paste, the program informes me of errors or shot down. Do you have an idae on how to work around that?
Thanks in advance,
Ayala

I posted a few questions requesting more information in the original thread:

http://community.cedrus.com/showthread.php?t=228