I'm a newbie so forgive me some of my ignorance.
I have BTS3.19 installed. I played C2C v25 (no prior version) for 4 hours last night. Loaded save game this morning and had a crash after pressing the end of turn button (where I left off previously). Don't know what 'MAF crash' (described above) is, but the screen just went black with an underscore white cursor in the upper left. Was forced to cold reboot. I'm guessing its the same issue that Tonyrat is having?
My video settings are set to high (I'd be happy to change them), memsaver=0, 1280x1024 resoloution (set by BTS my desktop is 1024x768) playing on a large size world. I've seen a lot of talk about viewports, but I don't know where that option is to tell you what it is set at (nor do I know how to change it). Sorry.
I'm running on a Pentium 4 2.8Ghz, 3GB RAM w/boot.ini modification, WinXP (fully updated), with a NVidia 7600GT (256MB) video card with up to date drivers.