Help Needed. Panel Views not working Shift 3 etc

My panel views have stopped working. i.e. Shift + 3 for GPS.
I initially get a black window, then nothing.
This appeared to have happened since installing FSUPIC and add on scenery UK2000.
I have tried reassigning keys, to no avail.
I have also disabled the recently installed uk2000 add on scenery.
Anyone any ideas.
Many thanks.
I initially get a black window, then nothing.
This appeared to have happened since installing FSUPIC and add on scenery UK2000.
I have tried reassigning keys, to no avail.
I have also disabled the recently installed uk2000 add on scenery.
Anyone any ideas.
Many thanks.
