   GL error: invalid operation
  hi!I''m using GL4Java 2.7.1.0if i try to load a png image with readTexture the java vm says: GLUT: Warning in (unamed): GL error: invalid operation.i tried to start this class with ms jview and it works but i have to use java. can you help?thx  
  hi there,I''m a Computer Science and Engineering student and I''m currently doing my final year project. You see, I''m using Gl4Java for rendering and manipulating a 3D Brain. it looks cool, but the problem is that when i try to get the texture loading, it just crashes. I got the same problem here. "GLUT: Warning in (unamed): GL error: invalid" when I systematically try to load a texture... I did not see any replies, but is it possible to help me out here?  I got only few weeks before me :''-( and I beginning to panic kos it''s been 1 and 1/2 months since that thing won''t work...;  hhi again, I forgot to mention that any implementation, the existing implementation, PngTextureLoaders or my own, won''t work... really can''t figure out why...;  You cannot make any random OpenGL code at any moment. For example, changing render modes in between glBegin and glEnd is such an invalid operation.   “Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it.”    — Brian W. Kernighan (C programming language co-inventor);  hi, thanx for the tip. will try to track down the problem 