Is it me, the computer or a bug?
Context:
- A vop COP2 filter.
- 2 images as input.
- I used COP Input OP and set Signature: vector from pixel.

When using the Vex OP Compare it seems it doesnt like comparing 2 vectors ( after using COPinput). Keep telling me I am giving the wrong input.
This happen: on windows XP - Houdini v8.1.704
and on SUSE 9.3 - Houdini 8.1.796.
I attached a hip file to explain the situation better.

Any thoughts?
I know there are ( and I did it ) other ways to do the same job.