Code composer studio : function profiling

Hi,

I try to use the function profiling.
The compilation option "--gen_profile_info" is activated and I start a "project debug session".

But the "profile data collection" view is still disabled : I can't activate a profile data. The following text is displayed : "there is no activity available for the selected debug session".

If I execute my program (HelloWorld..), a file .pdat is generated but it is empty : no information is displayed when I open this file with "Open Profile Data file".

Below my configuration:
OS : Windows XP SP3
CCS : 4.2.4.00033
JTAG Probe : Spectrum Digital XDS100v2
Target : OMAP-L138 (JTAG connected to DSP TMS320C6748)
Evaluation board : TMDSEVML138

Target Configuration :
<configuration XML_version="1.2" id="Texas Instruments XDS100v2 USB Emulator_0">
        <instance XML_version="1.2" desc="Texas Instruments XDS100v2 USB Emulator_0" href="connections\TIXDS100v2_Connection.xml" id="Texas Instruments XDS100v2 USB Emulator_0" xml="TIXDS100v2_Connection.xml" xmlpath="connections"/>
        <connection XML_version="1.2" id="Texas Instruments XDS100v2 USB Emulator_0">
            <instance XML_version="1.2" href="drivers\tixds100v2icepick_c.xml" id="drivers" xml="tixds100v2icepick_c.xml" xmlpath="drivers"/>
            <instance XML_version="1.2" href="drivers\tixds100v2c674x.xml" id="drivers" xml="tixds100v2c674x.xml" xmlpath="drivers"/>
            <property Type="choicelist" Value="3" id="The JTAG TCLK Frequency (MHz)"/>
            <platform XML_version="1.2" id="platform_0">
                <instance XML_version="1.2" desc="TMS320C6748_0" href="devices\c6748.xml" id="TMS320C6748_0" xml="c6748.xml" xmlpath="devices"/>
                <device HW_revision="1" XML_version="1.2" description="C674x Floating point DSP" id="TMS320C6748_0" partnum="TMS320C6748" simulation="no">
                    <router HW_revision="" XML_version="1.2" description="" id="device_0" isa="ICEPICK_C">
                        <subpath id="device_1">
                            <cpu HW_revision="" XML_version="1.2" description="" deviceSim="false" id="device_2" isa="TMS320C674X">
                                <property Type="filepathfield" Value="..\..\TMS320C6748_GEL_BSL_Files_v2.3\gel\C6748.gel" id="GEL File"/>
                            </cpu>
                        </subpath>
                    </router>
                </device>
            </platform>
        </connection>
    </configuration>

Does anyone has ever had this problem ?

Thanks