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Weird problems.

Pope Viper

Well-known member
OK, I'm scratching my head.

I did a fresh install, and wanted to import a VB 4 board. Using Paul M's, script, I got the follo0wing error:
Fatal error: Class 'XenForo_Importer_Abstract' not found in D:\Websites\Bunker\XF\library\XenForo\Importer\vBulletin4.php on line 10

Paul indicated that I should re-upload the files, which I did with the same results.

Then, I tried to do an IPBoard import, and received the following:
Fatal error: Class 'XenForo_Importer_Abstract' not found in D:\Websites\Bunker\XF\library\XenForo\Importer\IPBoard.php on line 12

So, I wiped everything, deleted database, downloaded the full package again, and unzipped it directly to the server. No change.

What else should I check?

Jake Bunce

XenForo moderator
Staff member
Make sure this file exists on your server:


Uploading the original files should restore this missing file unless there is something wrong with the upload.


Well-known member
If you unzipped it on your server as root you may have permission problems...I remember at one point I extracted the archive directly on the server as root and had to delete it (as root) and then give the user for that domain shell access to do the steps. I do however have no clue if this even applies to you or if it was unique in my case.