ah, good. You beat me to it.

Well, good you got the answer. You might contact the author to see if he's got a 64 bit version.

I'll PM you the exe and ahk file...

@drafter said:

Sketch up 2015 Model info dialog / Purge does not respond
I assume you mean Model Info > Statistics > Purge unused...
Is this 'issue' the same with every Model ?
What size is your 'problem model' ?
How many components, materials, layers etc does it have ?
When you say it "doesn't respond", what happens exactly ?
Maybe it's taking some time to purge everything ??
Maybe it's found nothing [or very little] to purge, and it's actually finished ???

@dave r said:

You're right and that's a very good question. Maybe the rating system on YouTube would help? I expect after you've watched videos from a few different people, you'll be able to tell who is well-prepared and whose style works for you.

Nice answer, Dave 😄 I've found that the tutorials with ridiculously high numbers of views (thousands) generally have decent content.