Hello i've made a little prog under winXP with dev c++ 4.9.8.0 and wxwidgets. It works very well. So i decided to use it under win98. Everything's fine, but when i want to close it, windows give me this message: PROJET2 (my prog) a causé une défaillance de pile (stack error) dans le module PROJET2.EXE à 015f:0042761f. Registres : EAX=009cb100 CS=015f EIP=0042761f EFLGS=00090202 EBX=009cb100 SS=0167 ESP=006a1fec EBP=006a2028 ECX=006a20a4 DS=0167 ESI=ffffffff FS=309f EDX=0040777c ES=0167 EDI=006a1fec GS=307f Octets à CS : EIP : ff 35 78 2a 54 00 ff 73 28 0f b6 75 0c 83 f6 01 ?tat de la pile : 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ffffffff ffffffff ffffff37 006a2074 this is my question: why does it work well under win XP and not under win 98? what are the possible reason for that? what can i do? HELPPPPP!!!!!!!!!!!!!