Thank you for the info. The required dictionaries in your Program Directory may damaged and that may the reason of this issue.
Please download the appropriate zip files (American.zip for american english and British.zip for british english ) from
Once you have them, unzip the .CLX and .TLX files and place them in the Eudora folder.(To find it, right click on the Eudora shortcut on your desktop and select Properties. On the resulting Properties window click on Shortcut tab. Click on the Open File Location button. You will get open the Eudora program folder. )
After copying the files, launch Eudora and copy and paste the following text into a new message-
The text you paste will show up in blue as a URL. Hold down the ALT key and click on it - a window will appear asking you to click OK. Click OK. That will do it - Eudora will now use the British language dictionaries and the American English dictionaries.
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