Hollow object filled with support

[Zerion299 0]

Warning I am Kinda new to Cura, so I won't know the real advanced stuff anyway.

My model should be hollow like a cup but Cura fills it with some sort of what looks like support material. Any ideas why it's doing this and how to change it.

[nallath 1,118]

Without the model or settings that you changed, it's all speculation from my side.

But things that generally cause this: The model is non manifold or "Make overhangs printable" is enabled.

[GregValiant 1,144]

Or the infamous "Remove all Holes" is checked.  The dropdown list next to the Search Settings box is Settings Visibility.  Set it to "All".  Go to Mesh Fixes and un-check all the boxes.