[KenV99]

These is my log if I force to play rtmp strem with DSPlayer:

20:03:08 T:1708 NOTICE: CDSPlayer::OpenFile - DSPlayer: Opening: rtmp://185.5.172.19/live?lp=YWxhZ29fdHY6OnNhbHQ6OmVlZGNkYmMzZGI3YmQwOGZmYjhjMzgzNTg1OTNlY2Iz playpath=z990102.stream live=1
20:03:08 T:1708 NOTICE: CDSPlayer::OpenFileInternal - DSPlayer: Opening: rtmp://185.5.172.19/live?lp=YWxhZ29fdHY6OnNhbHQ6OmVlZGNkYmMzZGI3YmQwOGZmYjhjMzgzNTg1OTNlY2Iz playpath=z990102.stream live=1
20:03:08 T:3744 NOTICE: Thread CDSPlayer thread start, auto delete: false
20:03:08 T:3744 NOTICE: CDSPlayer:rocess - Creating DS Graph
20:03:08 T:3744 NOTICE: Loading filter core factory settings from special://masterprofile/dsplayer/filtersconfig.xml (filters configuration).
20:03:08 T:3744 NOTICE: special://masterprofile/dsplayer/filtersconfig.xml does not exist. Skipping.
20:03:08 T:3744 NOTICE: Loading filter core factory settings from special://xbmc/system/players/dsplayer/filtersconfig.xml (filters configuration).
20:03:08 T:3744 NOTICE: Loading filter core factory settings from special://masterprofile/dsplayer/mediasconfig.xml (medias configuration).
20:03:08 T:3744 NOTICE: special://masterprofile/dsplayer/mediasconfig.xml does not exist. Skipping.
20:03:08 T:3744 NOTICE: Loading filter core factory settings from special://xbmc/system/players/dsplayer/mediasconfig.xml (medias configuration).
20:03:08 T:3744 NOTICE: Successfully loaded rules
20:03:08 T:3744 ERROR: CDSPlayer:rocess - Failed creating DS Graph
20:03:25 T:2836 NOTICE: Thread CFileCache start, auto delete: false

But I have filtersconfig.xml in C:\Program Files (x86)\XBMC\system\players\dsplayer

What I'm doing wrong?

The log shows that it is loading your filtersconfig.xml is being loaded from that location (special://xbmc/system/players/dsplayer/filtersconfig.xml).
It is designated that way by the developers for the purposes of making locations available without OS specificity.

I modified playercorefactory.xml into this:

<playercorefactory>
<rules action="prepend">
<rule protocols="rtmp|pvr" player="DVDPlayer"/>
</rules>
</playercorefactory>

Still no lucky.

Thanks for your patience

Now I'm confused. In your original post you wanted DSplayer to play the stream. The above rule is asking DVDPlayer to play it. But the log shows what I suspected. That DSPlayer cannot construct the graph. Which is exactly what is stated in the threads first post. So you are stuck with having to use DVDPlayer to play that stream.