FCKeditor.Packager.exe. Is there an error?

Hello. Look at this piece of code. This is a list of FCKeditor.Packager's actions. This piece creates editor/js/fckeditorcode_gecko_1.js:

Creating Package File D:\install\FCK\_testing_fc2.0\editor/js/fckeditorcode_gecko_1.js

Adding D:\install\FCK\_testing_fc2.0\editor/_source/internals/fckdebug.js
Adding D:\install\FCK\_testing_fc2.0\editor/_source/internals/fcktools.js
Adding D:\install\FCK\_testing_fc2.0\editor/_source/internals/fcktools_gecko.js
Adding D:\install\FCK\_testing_fc2.0\editor/_source/internals/fckregexlib.js
Adding D:\install\FCK\_testing_fc2.0\editor/_source/internals/fcklanguagemanager.js
Adding D:\install\FCK\_testing_fc2.0\editor/_source/classes/fckevents.js
Adding D:\install\FCK\_testing_fc2.0\editor/_source/internals/fckxhtmlentities.js
Adding D:\install\FCK\_testing_fc2.0\editor/_source/internals/fckxhtml.js
Adding D:\install\FCK\_testing_fc2.0\editor/_source/internals/fckxhtml_gecko.js
Adding D:\install\FCK\_testing_fc2.0\editor/_source/internals/fckcodeformatter.js
Adding D:\install\FCK\_testing_fc2.0\editor/_source/internals/fckundo_ie.js
Adding D:\install\FCK\_testing_fc2.0\editor/_source/internals/fck_1.js
Adding D:\install\FCK\_testing_fc2.0\editor/_source/internals/fck_1_gecko.js

Pay attention to this:
Adding D:\install\FCK\_testing_fc2.0\editor/_source/internals/fckundo_ie.js

May be here must be other filename? Like fckundo_gecko.js.

Presently this reason, on which my FCKeditor does not work inFireFox.