Some resolutions are not supported. Try a slightly lower resolution that your card and monitor supports and/ or use windowed mode.
Ladies and Gentlemen,
Now that Armageddon 1.3 BETA 2 is out, here is the resolution hack. I've only tested 3 resolutions but it should be evident what the values are for any other desired resolution:
Paste this onto the bottom of the settings.csv file:
L;7;Hearts of Iron 2 Doomsday Armageddon (1.3-BETA-2) 1280x1024 Resolution Hack;by nomonhan
2dff4c;4;5;
2dff56;3;4;
3aa4a6;30;32;
3aa4a7;32;38;
3aa4a8;34;30;
L;7;Hearts of Iron 2 Doomsday Armageddon (1.3-BETA-2) 1440x900 Resolution Hack;by nomonhan
2dff4b;0;a0;
2dff4c;4;5;
2dff55;0;84;
3aa4a6;30;34;
3aa4a7;32;34;
3aa4a8;34;30;
L;7;Hearts of Iron 2 Doomsday Armageddon (1.3-BETA-2) 1600x1024 Resolution Hack;by nomonhan
2dff4b;0;40;
2dff4c;4;6;
2dff56;3;4;
3aa4a6;30;36;
3aa4a7;32;30;
3aa4a8;34;30;
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NOTES: with the above cracks you need loading screens correctly resized and named (respectively)
load_1280.bmp
load_1440.bmp
load_1600.bmp
As before 1680 x 1050 results in CTD when the mouse is scrolled to the bottom so this is not recommended.
If you mean that running hoi2.exe gives that error you almost certainly are either trying to run the patch without the actual game or running the Armageddon expansion without Doomsday. Basically hoi2.exe can't find one of the .csv files that it requires to run.When attempting to open the file the program creates, I prompted with
"--- excel file not found"