Image copy resize

i want to use this class.
but i get 2 error !..

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C:\WINDOWS\TEMP\php7C.tmp
Warning: imagecreate(): Invalid image dimensions in C:\Programme\Apache\..........\myProject\mod\eventlister\class\class_resize.php on line 61

Warning: imagecopyresized(): supplied argument is not a valid Image resource in C:\Programme\Apache\..........\myProject\mod\eventlister\class\class_resize.php on line 62
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Notice: I put the class into a new folder called "class"
I Set the SAVETO funktion path to. function saveTo( $name = '', $path = "tmp/eventlister/" )


so i hope anybody can help me.

Also I have the same problem, I think it's something connected to the line where he had written this -> iOrig(...ecc..).
Iwonder if we'll get an answer, if so thank you very much.