To avoid multiple topics let's combine it all here. These are the issues we are looking into:   1) when the second fire bottle is pulled (it does not matter which is pulled first!) a clicking sound is heard that will stay audible. P3d might or might not crash (either with a CTD or a message "Breakpoint A Breakpoint has been reached.") but when it is shut down will stay in memory. This same effect can be started by other sounds (windows, fire bell etc).  This issue is most likely caused