The Enable bi-directional support does not stay checked.

[suki]

On my MG3550 I keep having to check the dialogue box in the printer properties (ports) but it immediately unchecks after i have pressed OK.  Now I cannot print - just keep getting an error message saying 

Cannot communicate with printer turn Enable Bi-directional support on in the printer's Properties dialogue box.

I do this but itm still doesn't work!!!