Help needed - Unable to jog my CNC mill

I've been away from LinuxCNC for a while. I've been working on other projects. Fired my CNC mill up this weekend but the jog doesn't work and I can't run a program. I thought maybe my parallel port break out board had gone bad but I can move each axis using the "test this axis" feature in the setup wizard. I have a very simple home made machine with only and Estop and no limit switches. Could someone please refresh my memory on some troubleshooting ideas? 

Thanks

Mike 

- It's a gantry machine with a single motor on each axis
- All the connectors are good
- The E-stop turns off and on in LinuxCNC
- Drives are all wired correctly
- Power supply is good
- Yes, I am using the keyboard to try and jog (arrow keys and page up/down) I have also tried the UI buttons (QTdragon UI)
- The preview screen is moving with my keyboard inputs. So LinuxCNC seems to 'think' it is moving.
- I will investigate more this weekend.

If I can move the axis with the arrow buttons under the 'Test this axis' button of the Stepconf setup (which I can) shouldn't they move within Qtdragon?

I have not limit switches set up in the configuration or wired to the breakout board but it seems as if LinuxCNC 'thinks' I'm past a limit and won't let me move.