BUG: invalid type while accessing fields

Attached case which replicates issue while accessing pressure field (develop branch).

pitzDaily-develop.tgz

fails with error

    Reading p
--> FOAM Warning :
--> FOAM FATAL IO ERROR:
unexpected class name volScalarField expected volVectorField
    while reading object p

file: /hosts/pnq073/home/sonakar/share/pitzDaily-develop/5/p at line 15.

    From function Foam::Istream& Foam::regIOobject::readStream(const Foam::word&)
    in file db/regIOobject/regIOobjectRead.C at line 295.

End