My error is different.
I am receiving file not found. I was getting a denied error because for some reason the XVM folder was checked to Read Only so I removed this and now, I am getting this error.
So for troubleshooting here is what I did,
The section for Over Target Markers has two options Strong Shadow and Weak Shadow, I have been trying to use Weak Shadow and this produces the error. I just changed it to Strong Shadow and I do not get the script error above. The install works perfectly fine.
I have not encountered any errors prior to installs before but it did start a few revisions ago. I just never sat down to troubleshoot, I am a tech at heart (A+, Net+, Sec+) but figured I would tech to it when I could.