No carrier available when using voucher

[Mikeey]

Hi!

I'm having a problem with PS 1.7.7.5 that is making me totally messed up!
Everything worked fine until I enabled a voucher.
If a voucher is enabled (doesn't matter if it's for free shipping or discounted price) I get the message that no carrier is available for the payment method.

And the weird thing is that it's intermittent!! Can't figure out what's causing the problem.

I have a customer group that I want to give 30% discount on everything in the shop, except shipping.
Everything is set up correctly and is working with payment "klarna" until I activate the voucher that gives the customer 30% off. Just by enabling the voucher in the BO is enough, don't need to provide it in checkout for the problem to appear.. 

Please, any help would be highly appreciated!
Tell me if you need any code or other screenshots to be able to help me!

(Sorry, but only have screens in Swedish) 

[SIWA_Fabian]

Hi!

 

Have you found the issue?

I'm facing the same problem.

Best Regards