Aportación realizada por Peter Ruthven-Stuart

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Joseph,

Sorry, this is not a solution, but may help someone find the solution.

When I downloaded and installed 1.6dev on the 20th March, the RSS feeds worked. Yesterday I 'upgraded' to 1.6 Beta (2006032900), I got the same error message that you mention:

There was an error loading this rss feed. You may want to verify the url you have specified before using it.

And yet, the exact same rss feeds work when loaded on an older moodle (1.5.2+), and on 1.6 dev.

Also, I note that someone has had this same problem before:

http://moodle.org/mod/forum/discuss.php?d=25534

Any ideas will be most welcome.

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Aseet,

Having posted the above message, I realised that there are a number of modules within moodle (as of 1.5.3), that do not respect group divisions. For example, entries in the glossary module can be seen by everyone in the course, regardless of group. In other words, an entry made by X student in X group, would be visible to Y student in Y group. So, setting 'separate groups' may not be the solution you are after.
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Aseet,

If you upload a text file of users it is possible to designate these users to both a class and a group within a course.

http://moodle.org/help.php?file=uploadusers.html

Furthermore, it is possible to set up groups so that members of any one group can not see who are in the other groups in the same course. So, as far as students in any one group are concerned, they are the only people in the course:

http://moodle.org/help.php?file=groupmode.html

However, it seems that you want every course title to be invisible from all users that do not belong to those courses. This is not possible within the standard moodle package, though I suppose it could be programmed. It may well have already been done, but if so I am not aware of such a hack.

Good luck, and sorry that I can't give you a definitive answer.