Try to set a wait(1); before the following:

vec_for_vertex(temp, my, 9107);
kruis1 = ent_create("kruis.mdl",temp,kruis_1);
wait(1);

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http://www.wuerfels-welt.de
Old Game Tutorial: http://www.puppenheim.org/MITutorial.zip
Free Game Editor: http://puppenheim.org/AlienalsWeihnachtsmann.zip
http://www.puppenheim.org/blender_starting_main_settings.txt