I don't know / can't find the fs2_open.ini file... fs2_open_diaspora_debug is in the Diaspora folder, not fs2_open, as the README told me...
The folder is .fs2_open, with a dot/period/full stop in front of the "fs2_open". Since the folder name starts with a dot, it's a hidden folder, so to see it in your file manager (Nautilus, Dolphin, whatever it may be), you'll need to unhide hidden files/folders.
I don't know if you're using GNOME, KDE, or some other desktop environment or window manager, but whatever the case may be, you'll have to search the Web to find out how to show hidden files/folders if you don't know how.
@ jg18 When I say the resolution doesn't shrink I mean that the display it is outputting 1920x1080, but I am getting only 1600 x 900 pixels of 1920x1080 - http://i.imgur.com/bApDi9y.png
I did remove the profile and re-add it...
As for launcher profiles, the one that matters that is the one that the launcher is actually using, which isn't pro00099.ini. Launcher profiles are stored in ~/.wxlauncher/ (again, note the dot at the start of ".wxlauncher", so it's also a hidden folder). You'll have to look at the individual profile .ini files (open them in a text editor) to see which one says "Diaspora" in it.
Also, crashes are aback on the debug build, but they seem to be different - instead of the game freezing and executing massive disk I/O then crashing, the game just quits instantly (usually while someone is speaking)... I haven't had any other crashes on other missions...
EDIT: I have also encountered this crash just now on mission 3, so it is not exclusive to mission 6. This time it crashed when another ship impacted on mine. Apparently, the game was still running, so I had to press 'Kill' on wxlauncher.
This is where a debug log (fs2_open.log) would be useful. As The E said, it's in ~/.fs2_open/data/fs2_open.log if you've run a debug build. If you can't find that log (note again the dot at the start of ".fs2_open"), are you sure you're running a debug build? The text in the lower-left corner of the screen in the Diaspora main menu should include the word "Debug".
One quick way to check whether the log exists is to open a terminal and type the following command:
If the file exists, then the terminal output will say
EDIT II: A reproducible crash is: On a mission (in my case mission 3), change the setting on the 'Deail' tab (F2) and hit apply. The game will crash.
Last I checked, Diaspora doesn't handle well the detail settings being changed in-mission. The DRADIS in particular can become distorted if this is done. Thus I wouldn't be too concerned about a crash in this particular case.