server texture packs dont work anymore

what I expected to happen: I join the server and I get the message:"this server reccoments the use of a certain texturepack. do you wish to install it automagically?"

what actually happened: nothing happened. I allready tried turning server textures off, relogging, turn it on. but it didn't help

steps to reproduce.
1. go to texture pack site
2. copy the link of the download(if you click on that link the download to your pc will start)
3. place it in the server.properties file after the server-texture=
4. save and start up the server
5. join the server

additional information: it used to work when it was first introduced. I don't know when it stopped working.