I have just installed this plugin on a fresh install, then when going to the settings>Misc>Problog page I get the following error...

"Undefined index: oauth_token" on line 81 of \plugins\radiantweb\problog\classes\twitter\TwitterOAuth.php

Any ideas?

looking into it.

pushed an upate to bleeding edge v5.1.0. But I need to test valide twitter URL before pushing live.

That fixed the issue, can now access that tab and all works