[Server wont let me connect]

Thanks =]

[[1.0.13]Voltz Spark[PvP/PvE][25 slots][whitelist]]

1. MC Account Name:Smashbox20
   
2. How long have you been playing Minecraft?: About 2 years
   
3. How long have you been playing Voltz/Universal Electricity? :1 year
   
4. What would you say your skill/knowledge level is in Voltz? (beginner, fair, adept, etc) :fair
   
5. Why do you want to play on the server? My friend plays on your server
   
6. What do you think you'd like to do if you are accepted? Have fun and play with my friend
   

[Server wont let me connect]

Everytime I try to connect to my classic server it says I need to get railcraft help!

[Help cant get onto my server!]

Earlier today I made a tekkit classic server and im trying to log on and it keeps telling me I don't have enough mods any ideas?