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The error in writing the data-file arises from using the single pipe for or operator ("|") in line 273. Change this to "||" to fix.
Solution to: "I only get a part of a window in the corner of my screen, and I cannot move it, nor reach any buttons and so on"
soluition: 'use 'callfract.m' to reset window position
%callfract.m script hq=fractal_explorer();pos=get(hq,'position'); set(hq,'position',[0,0,pos(3),pos(4)]);
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