Today, the top would not open. The 4 windows lowered but top did not move. Tried few cycles- windows go up and down with the top switch as it should. Checked also that divider shelf in the trunk is correctly in the tracks. Finally, shut the engine and locked the car, waited few seconds. started engine, top retracted normally.
Any thoughts?

 

Charge the battery? That can cause nearly every problem.

 

Thanks, would agree but I only operate the top with engine running, so charging should not be an issue. Also, the battery is maintained on the C-TEK every night, and is in good condition.
I'll keep an eye on it.