Gavick Photoslide GK3 not working: impossible to add slides

Hi,
I am running YourShop on my Joomla 1.5 installation, and the component Gavick Photoslide GK3 has always worked very well.
But it seems now that some problems have arised. Yesterday I finally tried to upload a new slide, but I received the error message: Slide has not been added.
The slide has the proper dimension, and everything is setted well as always (name, title, virtuemart product link...)
Can you please help me to figure out what's wrong? I don't know what has happened suddendly...

Thank you very much
Leonardo

Hi,
did you install some extra plugins? Or did you enable motools upgrade plugin ?

Hi

Having the same problem running Version 1.5.26 and it just stopped?

Anyone please help.

http://simplybhangra.com