Issues when moving XOT to another server

Hello,
We have installed XOT on a test Linux server and after creating some learning materials we found that xerte is one of the best solutions for us. After we finished the development of the learning materials we dumped the xerte MySQL database and copied all the files to a live server. After adding the database and changing the root file path we could access XOT as usual.
After publishing the learning materials again they are visible for the selected users.
However when we try to edit the content of the learning materials all of the buttons in the xerte online editor are labelled undefined and after selecting a page in the right side of the window nothing is displayed.

Can anyone suggest a solution for this issue?



Regards
Alex

After clean install of xerte and imporing the learning objects everything is fine.
By my opinion moving the content of the server via copying the files and database is important.

Regards
Alex