Crashing in windowed mode / Crashing on ALT-TAB...

[WaxPaper]

Is anyone else having a lot of problems with Dungeon Defenders crashing every time you try to ALT-TAB out of the game? I never had this problem until 2 or 3 patches ago, but now, the game client crashes every single time I either ALT-TAB or minimize it from fullscreen. The client also crashes if I use the in-game options to change it to windowed mode...

I've tried just about everything I can think of, including verifying the game cache integrity via Steam, as well as tweaking the window options (fullscreen option, resolution aspect) in the UDKEngine.ini file. (In fact, if I set the game to windowed mode in the .ini file, the game crashes immediately after launch.)

So basically, the game client crashes every time it loses focus in Windows, and the game won't even launch if it's set to windowed mode beforehand, via the launcher or the .ini setting... Anyone have any suggestions?

PS: I'm pretty sure it's not my hardware. I'm using a Core i7 with an ATI 5870, with 8GB of RAM. However, I am using Win64; do any of you 64-bit users not have this problem?

EDIT: Here's a handful of crash dumps from last night when the game kept crashing while I tried either switching to windowed mode, or launching the game in windowed mode:

http://www.megaupload.com/?d=GZ1H31LC

[spuderator]

Yeah i get the exact same thing happening.

Its not everytime I alt-tab. But about every 2/3 times which pretty much means i dont chance it anymore in game.

Alt-Tabe = Crash

[WaxPaper]

Yeah, for me it's EVERY single time, and if I try to launch in windowed mode, crashes every single time as well. I also should have mentioned in my original post; I've tried it both with multi-threaded rendering on and off, and this problem has persisted through several of my GPU's latest driver builds.

[Farina]

Same with me. I would like to see this fixed, but it isn't a huge priority. I'd prefer if they'd fix all the return-to-tavern crashes first. I hate getting kicked from a game, especially if I have a good team. The alt-tab thing isn't a huge deal for me because thankfully steam has a browser I can use by shift-tabbing. Just means I have to ignore my skype friends when Im on DD.

[Mikey-C-]

Personally, I know it has to do with 64 bit. Also, I've asked many people who crash what their OS is and it applies to mostly if not all Windows 7 Ultimate, 64 Bit.

Don't know the solution myself, but it may have to do with the Aero thinges when "alt Tabbing" (forgot name, its the new thing that switches/displays other windows) or misappropriation of a DD's resources when you switch from in game to desktop and crashing due to us people having 64-bits. Idk, does seem like a graphics issue.

[WaxPaper]

Hmmm... I'll try messing around with disabling Aero and some other things, like the Sidebar. Only other thing I can think of is ATI PowerPlay, but mine is disabled anyway...

Mikey, were the same people you talked to also using only ATI or Nvidia?

[WaxPaper]

UPDATE: Tried with more variables like Vsync off, AMD Optimaztion off, etc... Couldn't get it to work. Always crashes when the client is launched into windowed mode, or when you change to windowed mode in-game, or when you tab out of the game and try to return....

[WaxPaper]

More crash dumps related specifically to this problem:

http://www.multiupload.com/N42ZD41KF9

[Shirolol]

Personally, I know it has to do with 64 bit. Also, I've asked many people who crash what their OS is and it applies to mostly if not all Windows 7 Ultimate, 64 Bit.

Don't know the solution myself, but it may have to do with the Aero thinges when "alt Tabbing" (forgot name, its the new thing that switches/displays other windows) or misappropriation of a DD's resources when you switch from in game to desktop and crashing due to us people having 64-bits. Idk, does seem like a graphics issue.

Hey, sorry to ruin your theory but I have vista 32 bit and still get this exact problem.. Aero turned off etc etc. :\

Couple this with the constant "invisible monster/mana/item" bug, getting rather annoying to even play the game!

[hereisoblivion]

Hey, sorry to ruin your theory but I have vista 32 bit and still get this exact problem.. Aero turned off etc etc. :\

Couple this with the constant "invisible monster/mana/item" bug, getting rather annoying to even play the game!

Hey, at least you can even play the game. I've not lasted 2 minutes in a round without my system crashing completely with either a black screen, BSOD, or driver crash.
I've spent about 50 minutes TOTAL in game and haven't been able to even complete the first 3 waves without it crashing my whole system.
I've even completely rebuilt my computer, tried default drivers, recommended drivers, non-recommended drivers, hacked drivers, etc. No difference.