Hi and sorry for disturbing.
I have updated your plugin and WC major update 2.1.1.
My config-file is showing this: define ('WPLANG', ('de'=='de') ? 'de_DE' : 'en_EN');
Theme is Woothemes canvas, http://docs.woothemes.com/document/canvas/
No WPML installed. No translation plugin/module.
Normal page, no multisite. I would not like to show the URL of the shop online as I am working on it as an admin for a client.
The update went surprisingly smooth, as I did not lost products or anything similar but a few errors are still there, as I can't reach the checkout page and I can not find a solution for my specific problems.
1) Button 'Kaufen' is not linking to anything anymore. Just links to the page itself (the Page 'Kasse') after clicking and showing 'Die Gesamtsumme der Bestellung wurde aktualisiert. Bitte bestätigen Sie Ihre Bestellung, indem Sie auf den Button "Kaufen" am Ende dieser Seite klicken.' on top of the page everytime I click on 'Kaufen'-Button down at the bottom.
2) On the same page I have the information "Haben Sie einen Gutschein? Klicken Sie hier, um Ihren Gutscheincode einzugeben". But if I click on this link, I get on the same page again. ...../kasse/# Just with a # at the end.
3) Next to the broken 'Kaufen' Link down at this page on the left I see: "Bedingungen gelesen und zur Kenntnis genommen: Liefer- und Zahlungsbedingungen (AGB) Gelesen und zur Kenntnis genommen: Widerrufsbelehrung" and before the updates I had to tick both boxes. If I would not tick this boxes I got a message on top of the page to be so kind and tick this two boxes. Now there is no message anymore. Ticked or non ticked: The page loads itself after clicking in 'Kaufen'.
In the setting of woocommerce I have checked all my pages and links and I think they are right. I did not change any of them, just tested one. (Bezahlvorgang-Seiten: 'Zur Kasse'-Seite: I tried with Page 'Kasse' and with Page 'Bestellung prüfen->Bezahlen' both did not bring me to the checkout page.
That is what is missing: I can not reach the cash out page anymore. Coupon Link on top is not working on 'Kasse' page and there is no going to Paypal anymore possible.
Any ideas what happened? Any help is highly appreciated and will be supported by a healthy donation!