My Num lock is enable else i can't type any number :)
Seems I have no 5 as shortcut (but when I type 5 at the beginning of programm I arrive also at the Extrusion!
It's not the same for you?
Mystery of the technic :D
It's the E see follow....maybe it's a shortcut installed by an another prog or another person who intercept the E
No such trouble as I can use you mini calculator!)

[Shortcut Keys]
Ctrl+A=script:moi.geometryDatabase.selectAll();
Ctrl+C=CopyClipboard
Ctrl+N=New
Ctrl+O=Open
Ctrl+S=Save
Ctrl+V=Paste
Ctrl+Y=script:moi.command.redo();
Ctrl+Z=script:moi.command.undo();
Delete=Delete
E=Extrude
F1=script:moi.launchHelp();
H=script:moi.geometryDatabase.invertSelection(); moi.geometryDatabase.hide(); moi.geometryDatabase.selectAll();
I=script:moi.geometryDatabase.invertSelection();
R=Rotate
Space=script:var selection = moi.geometryDatabase.getSelectedObjects(); if ( selection.length == 0 ) moi.geometryDatabase.selectAll(); else moi.geometryDatabase.deselectAll();
[Recent Files]