It's a pretty small image, but I think it will do. First of all, use the QlikView Enterprise Management Console instead of the QlikView Management Console. There you should be able to create and trigger reload tasks just fine.
If that doesn't work check the following:
Have you checked that all QlikView services are running in the Windows services console (Startup, Run, services.msc)? Try stop all services and restarting them again.
Did you set administrator permissions (or privileges enough) so the distribution service can write in the folders where the files are going to be stored (the root folder and mounted folders in the QEMC, System, Setup, QlikView Server, folders)?
Can you reload manually if you get locally to the files?
QlikView Enterprise Management Console is the one you have to use. The other one is still in version 10 (probably because interface compatibility or something like that), but dissapears in version 11, that "merges" both into one only QlikView Management Console. There may be some lack of functionality in the QMC that is causing those issues. QEMC should not.