i got out of duxn and landed at onderon,but every time i tried to exit the spaceport my game crashes,i waited some time and tried it again and again so i moved on but then it happens again almost every time i try to move from different maps,what should i do?

i got out of duxn and landed at onderon,but every time i tried to exit the spaceport my game crashes,i waited some time and tried it again and again until something like 2 hours later if finally worked. so i moved on but then it happens again almost every time i try to move from different maps,what should i do?btw it happens only at those saves at onderon.