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由 ff_addons_ 发表于 Dec. 9, 2009 · 永久链接

@Ed

you have to go to yourprofile\extensions\extra-cols@jminta_gmail.com\chrome\content there you find the main.js. Open it with an texteditor an search:
switch (aColName) {
case “folderNameCol”:
Then delete the three lines wich starts with - in front of them. After that insert the lines with the + ...

Don´t forget to save the file an then start Thunderbird.