CSV Import will not work if the CSV data file saved by the Google Keyword Tool is not in the proper format.
To be able to use this properly, you should avoid a very common mistake while exporting the CSV file from the Google Keyword Tool. Please see the screen shot on the right.
Also, CSV files will not import if the software can't identify the headings in it. This normally happens because of language issues. If your language is not supported you can still use the software. Please see this blog post.
If you continue to have problems, please attach a sample CSV file and email it to contact [at] softnik.com
Good Keywords has been updated to support the new Google Keyword Tool. It should work properly with with the CSV files generated by the new version of the Google Keyword Tool.
You can download the latest version (Build date 17/May/2010) from here.
The Keyword Database Tool in Good Keywords v3, Keyword Strategy Studio and SEO Lab Professional will allow you to import the CSV files from the Google keyword Tool.

Use the links on the left side to export the data. For best results, use "CSV for Excel".