Can't pass red hammer mission grounded

[Marshall_T 0]

After finishing the mission grounded on red hammer i press continue on the note book thing when you complete the mission, but I cant progress because next mission is not showing, it should be assasination I think???

win xp service pack 1

amd 1700 xp

512ddr mb

nvidia g4 4600

game version 1.46

Somebody help please!!