I'm just trying to get some values from the database, I can't figure out what I am doing wrong; here is the code:

int q1;
SQL Sql;
Sql.connectSQLite("storage.dat");
Sql.getRows("recepies", S+"category='"+category+ "'");
while(Sql.getNextRow())
Sql.getCol(0, q1); ...

The row Sql.getCol(0, q1) apparently causes the run-time error:
Memp.setNum does not support PTR mode

I have no idea what that should tell me. Has anyone else encountered this, or knows what this is supposed to mean/ what I'm doing wrong?

no reason for Sql.getCol(0, q1) to return that error. Other than that, does it debug correctly, connects to the database and catches the rows?

IF Sql.getCol(0, q1); does actually return that strange error, it must be within the function, Esenthels function. As you are doing nothing wrong.

There are multiple functions with the same name:
Bool getCol(Int i, Int &value ); // get i-th column data as 'value', false on fail
and
Bool getCol(Int i, Memp<Byte> value ); // get i-th column data as 'value', false on fail

looks like for some reason the 2nd one is getting called, while the 1st one should.
Are you sure that 'q1' is actually an 'int'?

Hmm..
I wonder if the Memp constructor from int somehow gets triggered:
Memp( int ); // this simulates initializing from NULL

Can you tell me what platform are you using? and what compiler? (VS 2008/2010/etc)

Indeed the declaration of q1 was the problem. It wasn't actually int, it was short (I'm a freak for optimisation), and that did the trick.

//In case it matters, I'm on Windows 7, VS 2012.

I would have liked to save 16 bits of data per value, but I'm happy its working. I'm sorry I didn't think of this myself, I thought int and short are always treated the same.