I am going to be honest with you Aydenbeta. It may not sound nice, but sometimes being honest isn't nice but still better for you to hear.
Here you got an error message that you did not understand, and you didn't bother to look up the solution beyond a 1.3 thing. That shows that you either don't have the technical know-how for Tekkit yet or you aren't willing to work for your answer. Tekkit requires you to work for a lot and be willing to do some research by looking up wikis and tutorials online so you are not being a burden on the other players by asking them how to do everything. Many people on Tekkit servers will answer your questions, but they are being polite. You are probably making the game less fun for them and their enjoyment is just as important as yours. If the difference between Tekkit Classic and Tekkit Main stumped you, Applied Energistics / Logistics Pipes / QCraft is going to be way out of your league.
Be honest with yourself. Are you asking them a bunch of questions about how stuff works or how to do things? Are you asking to team up with people after being on the server for just a few minutes? These things annoy players. I have no doubts that you are likely a very nice person and your are honestly trying to have fun and meet nice people, but sometimes people aren't ready to be around others until they get to know them by chatting for a few days or even weeks.
Figure out the answers to your own questions by googling your problems and if that doesn't work, try wording your search differently or using another search website. Tekkit is fun BECAUSE it is hard. If you don't think that is true, then you might be too young to be playing it.
I hope you find what's best for you.