[solved] After upgrade from 1.2.0.8 to 1.2.1.0 I cannot activate Dutch language.

[TropischBruin]

I followed the steps on upgrading PS 1.2.0.8 to PS 1.2.1.0 and this went succesfull.

In my Backoffice I still see the Dutch language, I can re-upload the files but when I want to set the Dutch language active it gives the following error;

1 error
You cannot change the status of the default language.

The default language is: English.

Edit: After changing the default language to: French, I can activate the Dutch language and set it to default.