I've uploaded the GNS3 .net file for the lab and also the configs for the two routers (R2 and R5) that the serial line protocol is down when I open the lab and start the routers.
Examing from the files, i can't see any wrongs with your setting, below were some of the reasons i guessed for the line protocol down
1 You may connected the wrong ports, maybe you connected R5:s0/0<------>R2:s0/1, but the right way should be R5:s0/0<------>R2:s0/0
(Mayby show us the pictures of your topology,cause no one can open your file "BasicOSPF.net" because of the different type and
location of the IOS from one PC to another)
2 You may forgot to "no shutdown" one of the serial port on R5 or R2
3 I thinks it had nothing to do with the OSPF protocol, if you had did the right setting: the IP address、the right connected、and the DCE/DTE clock, i think the protocol will be up automatically
Wish you can make it !