Complete maps take a while to load because there is so much there. Hightower probably takes a while due to entities, and TM takes a while because it is a very large map, which lots of entities. Hammer actually isn't crashing, it's just not responding. It is still running, and your map is still loading, but hammer just doesn't want you know that it is doing work, it's kinda shy.
Let the map load run for a few minutes. I know that on my low-end laptop it took 5 minutes to open up Thundermountain, so if you have a not-so-powerful computer, you just need to be patient :/
@MaximilianZakes - Exactly as Fr0Z3n has said, these maps do take quite a bit longer to load ona PC that isn't quite at the top end of things. The ones that valve give for people to look at do not have EVERYTHING included in them, they strip out a lot of stuff that that your average user would have no idea what it would be just to help clean things up. Just give it some time and you will see it shall load It does on my PC fine, but then again, I do have one a little higher up the specs category. Lol
Hardware: i7 920@4GHz, 12GB RAM, GTX580
Hightower(took 6 seconds to load)
ThunderMountain(took 23 seconds to load)
So based on those figures with the hardware I have, comparably, most people would have to wait somewhere between 20-30 seconds for Hightower to load and possibly 60-75 seconds for Thunder Mountain to load
@Duffking - Thank broski, let me know if you find anything useful from it and share it with us, the more knowledge the better.
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Thanks for the uploads again, guys. This is insightful stuff
One thing I have a question about though, if anyone can answer, is how are the ghosts managed in eyeaduct? According to the valve developer wiki, there is a "ghost" entity that is not in the original FGD, and they don't provide a custom one. The ghosts are nowhere to be seen on the map, there are no spawn points for them, and there are no pathways for them like in harvest.
are they perhaps controlled and spawned entirely by nav?
Thats a new bug, presumably from the most recent sdk update, maps with invalid solids in now crash hammer no matter what option you choose. Also if you choose yes to reload the map with the invalid solids removed it will crash, but if you load it up again the map will appear in hammer but with all the point entities removed.