With the help of the support (thanks a lot!) I was able to find the reason for the DirectX crash and fix the corresponding code. The issue was as follows:

Code:
FONT* my_font = "...";

TEXT* my_text =
{
	font = my_font;
	...
}

void my_font_update()
{
	if(my_font) ptr_remove(my_font);
	my_font = font_create(...);
}


Calling my_font_update() would not result in an immediate crash but let my_text have an invalid font pointer which would lead to erroneous behavior on subsequent video_... calls.

Last edited by Superku; 10/10/14 15:43.
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