I have installed rftools and minecolonies in the same modpack, when i build a elevator it doesn't work in the colonies but when I try to build it out of the colonies, it work
Versions:
Minecraft: 1.10.2
Rftools:1.1x-7.16
Minecolonies:1.10.2-0.9.7587

Did you report this to minecolonies as well? This has been reported before and I believe it was an issue on their side

It is an issue on their side, and I believe it’s caused by colony protection. A temporary workaround is to disable colony protection (or perhaps whitelisting block interactions on the whole elevator path).

See ldtteam/minecolonies#2561

Thank you for taking the time to create this issue, as we're no longer supporting versions below 1.12, I'm going to go ahead and close it but if this bug seems to continue over to newer versions, please do report it again so we can investigate the issue further.