I realized after installing the ROM the FM radio wouldn't run at times - it kept giving an error "Currently not available"
To make the FM radio work I simply went to Settings > Apps > FM Radio then tapped in Force Stop.
Went back to the app drawer and tapped on the FM radio and it worked.
I do this every time I get the same error. Don't know whether it's a bug on the ROM or there was spmething wrong with the installation. If anyone has a permanent fix please let me know.