Error Object Reference Not Set

Recently I have been suffering from the following error, associated with the DotNetNuke text editor:

A critical error has occurred. Object reference not set to an instance of an object.

I found that the error was apparent after uploading a new dll file to the bin directory or if the cache on the text editor had expired. It was my understanding that if a language pack was missing then the default would be used. I therefore drew the conclusion that the error related to a missing English language pack (en-GB).

I started by ensuring that I had a corresponding English (en-GB) language, at this time a simple copy of the default, in each of the App_LocalResources directories associated with the DotNetNuke modules and core functions. Unfortunately, the file TextEditor.ascx.en-GB.resx, which seemed to be the obvious choice, did not resolve the issue.

As suspected I have now tracked this down to the use of an English language (en-GB) as the default language of choice, whilst not having the appropriate language pack installed. the file required is called en-GB.xml and it is to be found in the directory

dotnetnuke/Providers/HtmlEditorProviders/Ftb3HtmlEditorProvider/ftb3/Languages

NAT September 2005