Error: handler for uc_orders > payment_method doesn't exist

I can not reproduce this error. Could this be due to some undeclared dependency to another module that I need to fix?

Can you list the Ubercart modules that you have enabled?

Have you tried to clear the views cache? It is a bit far fetched - but worth a try.

I can't reproduce the error completely. However when I use UC 6x 2.2 I loose the filter too. The field still works though.

When using the latest dev of UC both works fine.
I am not going to suggest running a dev version in a production environment - but if this is a work in progress I think you might want to switch to the dev version, since it is a release candidate and contains several changes to the data model, that we have included in the 3.0 version of uc_views.

Is this still a problem, I also tried to reproduce it and I couldn't, all seems working fine. I actually found a small bug on the filter when retrieving the payment method from the db, I think they should be retrieved from ubercart API itself. I will investigate more on that, but it has nothing to do with what you are reporting.

If you still have issues with this, can you pastebin somewhere the views exported code so we can try it out? (may not best here, somewhere like pastebin.com).

Please paste an exported view if this problem still occurs in the latest version.