No Match for Call

[Atomic_Sheep]

Hi, I've got the following code:

file1.h

#include "file2.h"
#include <QString>
 
struct ChartProperties
{
    QString yvar;
};

#include "file2.h"
#include <QString>

struct ChartProperties
{
    QString yvar;
};

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file1.cpp

ChartProperties chart1;
if(VariablePresent(chart1.yvar) //etc

ChartProperties chart1;
if(VariablePresent(chart1.yvar) //etc

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file 2.h

#include "file1.h"
#include <QFile>
 
bool VariablesPresent(QString userVariable);

#include "file1.h"
#include <QFile>

bool VariablesPresent(QString userVariable);

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file2.cpp

bool VariablesPresent(QString userVariable)
{
    QFile cVariableEquivalents(//actual system path);
    if(!cVariableEquivalents().exists())
    //etc
}

bool VariablesPresent(QString userVariable)
{
    QFile cVariableEquivalents(//actual system path);
    if(!cVariableEquivalents().exists())
    //etc
}

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I may have missed one or two includes here or there... I've got them in my program, so the problem isn't with the includes I don't think.

The error that I get at compile is:

no match for call to '(QFile) ()'

Any ideas on what I'm doing wrong?