[Jakov_the_Jakovasaur]

if its a problem with different scripts depending on eachother then it wouldnt necessarily matter if you are both setup the same. what might matter is how quickly your clients can receive information from the server and whether everything necessary is received before the first weapon script is executed. this would explain why updating weapons causes it to start working properly

for example you might have a weapon script which is using join("class"); clientside. i dont know about right now but at least in the past this has caused problems due to the joined script having to be requested from the server once the main script has been processed, and then code within the joined class wasnt available straight away

without seeing code i can only really speculate lots of different possible reasons