Magic to Tech building error?

[Blueblaze]

I wanted to move the Library from the Magic faction to the Tech faction, the problem is, only 1 worker will work on the building, rather than getting multiple ones like the other Tech buildings. Is there a way to get around this?

[Blueblaze]

As well, if I decide to take my worker off construction, then bring him back to construction later, the worker won't build anymore.

[Blueblaze]

Well this was fast, but I found out the problem, the unit must be able to repair as well as construct. I didn't make the building repairable, only constructable, but for anyone who was interested in making it so only 1 worker could build a building, you could use this if you wanted to make it work, but if a worker gets distracted from the project, he can't resume it.