There seems to be a little confusion here.
There is nothing wrong with the script; it works perfectly outside of ThinApp.
Instead, there appears to be an issue when including it inside ThinApp.
Any incorrect formatting, syntax errors etc, would manifest outside of ThinApp, as far as I am aware. Just to be absolutely sure, I have made sure that it was saved with notepad etc, etc but of course the problem persists.
I would regard myself as a veteran VBScripter, for what it's worth, and have not had problems including scripts in ThinApp in the past. However, I have not attempted to query WMI in a ThinApp script before. I am aware that there are limitations (as mentioned, WSCRIPT for example).
Since it works for you, I am guessing it may be a ThinApp setting, hence why I posted my INI settings. I guess it could be a problem with the ThinApp version (4.7.2-771812). Would it be possible for you to post the package.ini file for the test you performed?
I do appreciate your help.