The error occurs in the following maner:

I load the control, put some dimensions on row area, expand them, put
some measures and then, I go to other web page of my web application.
When I come back to the application I get the following error:

There is a problem with this cube.

La columna 'SET_CAPTION' no pertenece a la tabla rowsetTable.

(which means,SET_CAPTION column does not belong to rowsetTable)

Well, the error is on CubeSchema.cs on line 102 (inside Open
method).I'll try to solve the problem, but any help will be
appreciated, since I have no idea what SET_CAPTION stands for.

Thnak you for you attention

I am blue wrote:
I have fixed this for now by just putting an if around line 102 to
check that the column exists. Everything seems to work fine now but I
was wondering if anyone had found a better solution.

if ( sRow.Table.Columns.Contains("SET_CAPTION")) { // New IF statement
s.Caption = sRow["SET_CAPTION"].ToString(); // Original
Line 102
}

It seems that Richard wanted to save the state of the control while the
session was up.
I commented out lines 92-118, wich dealt with the saveing of the state
of the control and everything works fine.
SInce I don´t need to save the state of the control every time I leave
the page in which I've palced the control, this solution is fine for
me.

I am blue wrote:
Thanks for the tip. I spent most of yesterday working on this as my
solution only just caused another problem, it didn't actually fix it.

I have commented out those lines and it appears to have fixed it for
me.

Thanks.