You should have a directory for your script repository downloads and be able to right click and update it. After you do that, there are two directories you must then copy to your innerspace directory (usually C:\Program Files\Innerspace\).
That will update all of your scripts.
If it is ISXEQ2, I believe there was a manual update not to long ago and if you check the forums, there should be a link that will allow you to download the DLL and just put it in your InnerSpace directory.