Payment gateway new or edit existing turns a blanc page

[Thanos]

Hello,
I have the latest VM2 version (VirtueMart 4.0.0 10645) as well as Joomla 3.10.9.
When I add a new payment gateway and trying to save it before proceed to configuration it show a blanc page. I mean nothing at all.... No error message, no button, nothing. Off course it doesn't save it, so what did I go wrong?
Also the same when I'm trying opening an existing payment gateway.
Thanks.

[Jörgen]

Are you using the new admin template ?
Switch back to the old one.
Have you added a new payment plugin ?
Are you using an old 3:rd party payment plugin that needs to be updated ?

Jörgen

[jenkinhill]

You get a blank page? See http://forum.virtuemart.net/index.php?topic=117042.0