[Bug 48296] "Unable to add word to dictionary, language settings are broken"

[Craig Box]

Public bug reported:

Using Dapper final (and also RCs), If I try to add a work to the
spelling dictionary in Evolution, it reports "Unable to add word to
dictionary, language settings are broken".

My system language, according to the System->Administration->Language
support applet, is supported English, default English (New Zealand).

I have these packages installed, which may or may not be relevant:

ii  language-pack-en                       6.06+20060529                         
ii  language-pack-en-base                  6.06+20060529                         
ii  language-pack-gnome-en                 6.06+20060529                         
ii  language-pack-gnome-en-base            6.06+20060529                         
ii  language-selector                      0.1.20                                
ii  language-selector-common               0.1.20                                
ii  language-support-en                    6.06+20060529                         
ii  gtkhtml3.8                             3.10.1-0ubuntu3  
ii  evolution                              2.6.1-0ubuntu7

** Affects: evolution (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

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"Unable to add word to dictionary, language settings are broken"
https://launchpad.net/bugs/48296