Since SC2 1.5.0 introduced may new feathures and changed many things. So I need to modify lot of the GAx3 project to adapt it.
Becasue of this, any new features of GAx3 would only be added after SC2 1.5 goes live. But I still made this patch 2 as a bug fix. Because this bug broke GAx3's trigger created beam systems.

Renee2islga AuthorJust made a update for GAx3 mod.
The patch 2 is just a emergence fix for a actor bug in GAx3 for 1.4.3, and didn't include any other features.
In the previous build, the GAx3 function - "Site From Attach Point" would always set the actor site posion to the given actor's center instead of the given Attach Point. So every beams created by these site would always attached to the center of the actor.
This bug is caused by some minor actor system changes in SC2 1.4.x. But the GAx3 patch 2 just fixed it, and I have already uploaded the new version of GAx3 to US, TW and CN Server. If you occured this bug in you map, please don't forget to update the GAx3 dependency of your map.
The local version can be downloaded here:
http://www.sc2mapster.com/assets/gax3-starcraft-ii-editor-enchant/files/6-gax3-mod/
This bug was reported by Creation25 and Mille25, thank you! Hope the new GAx3 could help you slove the issus occured in your project :)
Edit: added a pic - now this action works properly again:
For more information of GAx3, please have a look at its pathnote and develper manual:
http://www.sc2mapster.com/forums/general/general-chat/34564-gax3-patch-1-build-1-1-0-2433-patch-note-tip/
http://www.sc2mapster.com/forums/resources/project-workplace/27296-gax3-star-craft-ii-editor-enchant-mod-mod-download/
GAx3 - An A extremely powerful Mod to amplify the capability of StarCraft II Editor!