TRIS E setting for 18F2550

[skimask]

Hi Guys,
I want to use Pin 1 (TrisE/MCLR input) as a digital input and having problems trying to set TRISE.3 as a digital input.
I get error [113] symbol not previously defined.
I've set CONFIG MCLRE = OFF in the .inc file to disable MCLR, but that doesn't help.
I know it's simple but just can't figure it out.....
Cheers
Squib

If you program and then do a readback of the '2550, is the MCLRE bit still set or reset?
Sounds to me like the CONFIG isn't being set in the PIC itself.