Dear forum frinds.

Who recognise this problem.
I installed studio 8 , with newest update . Everything worked okay.
I eddited two video's and it wordked great.
Then , while edditing, suddenly the program closes.
I just doubleclicked a frame to eddit and the whole lot disapeared.
The strangest thing is that afther this time , the problem stayed.
I reinstalled the program but it still closes when i use edditing fuctions.
I have had this strange closing problem with other programs also. In photopaint the program can close when i open an certain jpg file.
In Bryce when i use an eddit option.
But how is it possible it works alright at first , and than sudenly occurse and won't go away?

Who can give me a hand?

xp1700+AMD/winxp-home/512mb mem./32mb kyro hercules prophet video card.