fltk printing

[Dan Newman]

Using octave 3.3.51+ and the fltk backend, on-screen display is fine but 
printing doesn't seem to behave as expected.  For example,

>> x=0:0.01:10;y=sin(x);plot(x,y)
>> print('test.ps')
ferror: fflush: invalid stream number = -1
error: called from:
error:   /usr/local/share/octave/3.3.51+/m/plot/__gnuplot_get_var__.m at 
line 86, column 7
error:   /usr/local/share/octave/3.3.51+/m/plot/print.m at line 538, 
column 27
>>

As far as I can tell, gnuplot should not be involved at all.

Any suggestions will be gratefully received.

Thanks,
Dan