Drop Top Stop

On the way out to Thanksgiving dinner with friends, I went to drop the top to enjoy the 80 degree day, but the operation stopped halfway through the process.

I then raised the top, and lowered it a couple more times with the same result.
It has ceased to finish the lowering process.

Low pressure in the hydraulics?
It's not like I can just hit it with a hammer.

Back to the shop in the morning?

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Morning update:

Works fine.
Why?
Possibly because I did a system reset (turned the car off yesterday, and on again this morning).
I should have tried that yesterday, but I kept doing the top up/down without turning the car off/on.
Now I know.
Duh.
And I'm supposed to be a computer guy...
Embarrassing.

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RTFM!
After Reading the F**king Manual, I learn that the engine must be running to operate the top.
Duh.
Well, hey, I'm new to this.
Guys don't read instruction manuals except in extreme circumstances, right?
:)