Cannon firing problems

[Killer Svend]

When firing the cannon on the Brewster 339E, the campaign freeze, not ctd but the result is the same back to start, it is the same if I use the button 2 on the joy-stick or use the space-bar, both are function well on all other aircrafts with cannons,only the Buffalo is the problem.Any ideeas how to solve this problem
Killer Svend

[_486_Col_Wolf]

First thing I'd try is replacing the DP file with a known good DP file from another AC with cannons. If that solves the problem then you have isolated the problem to the DP file. If so, check the cannon entries on the bad DP file.

[Killer Svend]

It was the dp file caused the problem, thank you
Killer Svend