[French Version] The Right Round Tier 5

I’m on the 5th tier of the mission, “The Right Round,” given by Kurt in Kaidan, “Prepare for the assault,” and after I put the three towers on the ground, well nothing happens.
I try to quit the mission and come back, quit and relog, but I’m always preparing for the assault.
How can I remedy this situation?


PS : Sorry for my bad english ^^’
[ Mod edit: Tidied up your English for you! ]

Have you picked up the C4 charge and placed it near the breach?

The French language phrasing for this mission tier is a bit vague - after you’ve located and placed the explosives FormlessBlackVoid mentioned, you should be able to proceed normally.