Create a sketch with the following code:

[code]
import processing.opengl.*;

// Initilaize the sketch
size(400,400);

// Choice of colors
background(0);
fill(155,60,0);
stroke(255);
[/code]

Run it. The applet appears and the window disappears right after.

Then try:

[code]
// Initilaize the sketch
size(400,400);

// Choice of colors
background(0);
fill(155,60,0);
stroke(255);
[/code]

or

[code]
int t;

// Initilaize the sketch
size(400,400);

// Choice of colors
background(0);
fill(155,60,0);
stroke(255);
[/code]

Run it. Works correctly.

My guess: it has something to do with the default dispose() method in the
libraries. This problem also happens with my library which doesn't
implement the dispose() method.

*** This bug has been marked as a duplicate of 204 ***