Su 8 on windows

the plugin is correctly installed, double checked, I read through most of the previous posts to find an answer but still:

the plugin only works once, meaning..I can start over and over again with the I key , making several ivy's... however when open a new file, I can make stems(red line) make leafs(green x) but Finishing it up by clicking shift...does not work...It only creates a line on the main stem, and a little squaro on the bottom, which would be the starting point... and someone posted that before here I saw. I have to close sketchup in order to get it working again, and no there is no bug msg.

Second thing..hów can I choose which leaf I want? does it only go by default? meaning I can change the Ivy leaf components in the plugin folder...but then im stuck with that... I can't load 6 different leafs and select the ones i want?

Thanks for anybodys answer in advance