Why do some of my Textures cause this error?

I've been making a game using the rokonandroid game engine, but I randomly get an error that causes the layout to just stay as it is, and never update.

The following error occurs:

12-13 15:05:17.876: ERROR/Rokon(2798): addToActive(229433297) 12-13开发者_JS百科 15:05:17.876: WARN/System.err(2798): java.lang.Exception: addToActive(229433297) 12-13 15:05:17.876: WARN/System.err(2798): at com.stickycoding.rokon.Debug.error(Debug.java:71) 12-13 15:05:17.876: WARN/System.err(2798): at com.stickycoding.rokon.TextureManager.addToActive(TextureManager.java:54) 12-13 15:05:17.876: WARN/System.err(2798): at com.stickycoding.rokon.Texture.onLoadTexture(Texture.java:228) 12-13 15:05:17.876: WARN/System.err(2798): at com.stickycoding.rokon.GLHelper.checkTextureValid(GLHelper.java:201) 12-13 15:05:17.876: WARN/System.err(2798): at com.stickycoding.rokon.GLHelper.bindTexture(GLHelper.java:189) 12-13 15:05:17.876: WARN/System.err(2798): at com.stickycoding.rokon.GLHelper.drawNormal(GLHelper.java:366) 12-13 15:05:17.876: WARN/System.err(2798): at com.stickycoding.rokon.DrawableObject.onDrawNormal(DrawableObject.java:382) 12-13 15:05:17.876: WARN/System.err(2798): at com.stickycoding.rokon.DrawableObject.onDraw(DrawableObject.java:360) 12-13 15:05:17.884: WARN/System.err(2798): at com.stickycoding.rokon.Layer.onDraw(Layer.java:138) 12-13 15:05:17.884: WARN/System.err(2798): at com.stickycoding.rokon.Scene.onDraw(Scene.java:934) 12-13 15:05:17.884: WARN/System.err(2798): at com.stickycoding.rokon.RokonRenderer.onDrawFrame(RokonRenderer.java:40) 12-13 15:05:17.884: WARN/System.err(2798): at com.stickycoding.rokon.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1112) 12-13 15:05:17.884: WARN/System.err(2798): at com.stickycoding.rokon.GLSurfaceView$GLThread.run(GLSurfaceView.java:946)

What causes this error? Anybody know of how to fix this error? And is it possible that my textures are causing this problem?

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Do your textures need to have the size with the power of 2, like 64px x 64px, 128x128, 256... etc?