This has been driving me nuts.
So Ep2 breaks and all the dialogue can't be found. Characters stand around looking dumb when they should be talking.
In the SDK I lose all potential dialogue from EP2 severely limiting what Alyx can say and do when building my mod.
My mod:
http://www.moddb.com/mods/half-life-2-deep-downSo on the advice of a few online, I upgrade to the Steampipe version of EP2.
BIG MISTAKE!
This update moves all content for HL2 games over to the VPK format (like Left 4 Dead 2 etc..). This is all well and good (its easier to package mods and a more efficient format) however the old SDK can't access the VPK files. So that's it, if you upgrade you'll lose all access to the SDK tools.
HL2 hasn't been updated to allow for vpk addons either. So you can add an addon folder and put your VPK mods in it, but there's no way to activate them. We're left somewhere in limbo.
For TF2, DOD and CS:S they've released a Beta version of the SDK and you can find those tools in the bin folder within the game directory but that update has not happened for the HL2 games.
It sounds weird but I'm so utterly depressed about all this. I was about 2 days away from releasing a project that I've been working on for over a year now. I didn't realise how dependent I was on HL2 mapping until it's gone.
LOL This is not healthy.