MC Mod won't work in Tekkit Classic

[dchl]

So I have a mod that I really would like to use on our Tekkit server... This is the mod link: http://www.minecraftforum.net/topic/1262805-152-key-and-code-lock-mod-v103/

It is a locked door mod... It works fine in Vanilla MC but I can't get it to work in Tekkit!!! PLEASE HELP! And yes, I used the 1.2.5 version...

[Al3xthegre4t]

There might be an item I'd error in with another mod. You'll have to either use idresolver mod (google it) or manually find the I'd in the config files

[dchl]

There might be an item I'd error in with another mod. You'll have to either use idresolver mod (google it) or manually find the I'd in the config files

The guy who made the mod said that there shouldn't be any mods that his mod won't work with, but i'll check it out... Thanks!