imagesc: blank plots

[Milan Simonovic]

Hi all,

just installed octave-3.6.3 via macports, and now trying to get imagesc to 
work. Correct me if I'm wrong but this should not return blank plots:

octave> imagesc(rand(50,50)); 
octave> imagesc(magic(10)); 

plotting seems to work fine, plot(linspace(1,100)) does show a line. 


And a related problem, octave can't switch to fltk:

octave:1> available_graphics_toolkits
 ans = 
 { 
 [1,1] = fltk 
 [1,2] = gnuplot 
} 
octave:2> graphics_toolkit fltk 
error: feval: function `__init_fltk__' not found error: 
called from: error: /opt/local/share/octave/3.6.3/m/plot/graphics_toolkit.m at 
line 59, column 5 
octave:3> 

Any ideas on what might be wrong? 

regards,
ms