The EDIT problem does not work.

Hello,
I installed the SIM on my server. I added a problem and would like to edit it. I can not do this, HTTP error code:

501 - This feature has not been implemented yet.

It's the same with submission and solutions. What to do?
Regards.
Sorry for my English.

[varqox]

There is a major refactor going on right now and it is happening on the develop branch. There problem set and several new features are implemented, but contests are not ready. Currently I have no time to work on it and editing problems can be done only by reuploading the package. This is quite hard operation to project and even more to implement. Sorry for the inconvenience.