Hi once again guys and girls!
I added programmatically the RSS Aggregator webpart to a webpart page using a feature event receiver. Everything is done correctly if I don't set the FeedUrl property. If I do an error message appears indicating that a unexpected error occured and that I shoud check for details in order to correct the problem.
I edited a functional RSS webpart and add the feed URL manually. Everything worked fine. Comparing the XML from both webparts I noticed that on the good webpart was added some XSL. Only to experiment, I added that same XSL to the webpart that is added automatically to the page. It didn't work.
Can someone tell me how can I configure programmatically this type of webparts?
Thanks.