I'm trying to decide if I want to update my TS12 build past 49922, but it's hard to tell if I should or not. Anyone have some helpful advice (without going on a rant)?
Simple.
Make a backup of you current Trainz install at 49922. Put the hole kit and kabootle on another drive and rename the folder to something like TS12-Pre SP1HF3.
Once this is done, you can then upgrade if you wish. I recommend doing backups periodically anyway because you can lose your stuff. I had that happened this past Saturday. I pulled a brain fart and lost my documents. I had my Trainz backed up but not documents! Doh!
Anyway if you do decide to upgrade, have patience. This process will take a very, very, very long time. The SP1 it self is huge and takes time to download, then the install is wicked. This process can take hours. Mine took over 12 hours to install, but that was with 10 years of content in my local folder.
Make sure your antivirus is off and you are disconnected from the network (Internet) while the upgrade is going on. Once all of this is completed, reboot your PC.
Now run an EDR which can also take a very, very, very, long time. You are going to see a ton o' errors in Content Manager. DON'T PANIC!!!
Reboot again after this, and then install the subsequent patches to bring everything up-to-date.
Now here's the clincher...
Don't go right into Trainz. Go to Content Manager first (again). You are going to see warnings and possibly lots of errors in Content Manager. DO NOT Panic. These are usually because of missing thumbnails. Create a simple "Thumbnail.tga" and use that as a placeholder for any missing ones. You'll need to edit the assets in Content Manager using the edit in Explorer, but the process is quick. Any other errors we can help you with if you have them.
Good luck, and I think I may have covered everything. Again, the backup is your savior should things go tits up as they say.
John