Copy-paste fix pattern
library CB-Render
fn main() {
init_window(640, 360, "Window first")
draw_text(24, 24, "Ready", 0xFFFFFF, 24)
swap_buffers_fast()
}Why it happens
A draw or input operation ran before a window existed.
How to fix it
Call init_window before draw, input, and present-style operations.
Runtime and Studio now show this kind of page from the error dialog: plain message first, stable code second, original details third.