System Workbench for STM32

Hello Laurent,
 
thanks for replying.
 
I made sure ST-Link Utility did not have any conncetion anymore before using Debugger. Does ST-Link Utility has to run or not ? Nevertheless I tried the following sequence
- Before Starting ST-Link Utility : failed on Initializing PLDs...
- ST-Link Utility started but not yet connected : failed on Initializing PLDs...
- Connecting the board took two attempts before successful .
- ST-Link Utility started and connected: failed at
Debug: 261 83 hla_transport.c:171 hl_transport_init(): current transport hla_swd
Debug: 262 83 hla_interface.c:44 hl_interface_open(): hl_interface_open
Debug: 263 83 hla_layout.c:42 hl_layout_open(): hl_layout_open
Debug: 264 83 stlink_usb.c:1698 stlink_usb_open(): stlink_usb_open
Debug: 265 83 stlink_usb.c:1716 stlink_usb_open(): transport: 1 vid: 0x0483 pid: 0x3748 serial:
Error: 266 287 libusb1_common.c:97 jtag_libusb_open(): libusb_open() failed with LIBUSB_ERROR_ACCESS
Error: 267 287 stlink_usb.c:1729 stlink_usb_open(): open failed
Debug: 268 287 hla_layout.c:49 hl_layout_open(): failed
Debug: 269 287 command.c:628 run_command(): Command failed with error code -4
User : 270 287 command.c:689 command_run_line(): in procedure 'init'
in procedure 'ocd_bouncer'
Debug: 271 288 command.c:628 run_command(): Command failed with error code -4
User : 272 288 command.c:689 command_run_line():
Debug: 273 288 hla_interface.c:119 hl_interface_quit(): hl_interface_quit
- ST-Link Utility no more running: failed on Initializing PLDs...
 
I am using
Eclipse IDE for C/C++ Developers
Version: Mars.2 Release (4.5.2)
Build id: 20160218-0600
 
On update, I did not receive any updates, hence I assume I have the latest version
  ARM Compiler for MCU (for Windows 32 bits) 1.7.0.201602121829            fr.ac6.feature.mcu.externaltools.armnone.win32.feature.group   Ac6
  Eclipse IDE for C/C++ Developers      4.5.2.20160218-0600     epp.package.cpp         null
  External Tools for Windows (32 bits)   1.3.0.201507241045      fr.ac6.feature.mcu.externaltools.win32.feature.group            Ac6
  OpenOCD (for Windows 32 bits)         1.10.0.201607261143            fr.ac6.feature.mcu.externaltools.openocd.win32.feature.group   Ac6
  OpenSTM32 IDE         1.10.0.201607251855    fr.ac6.feature.mcu.ide.feature.group     Ac6
  OpenSTM32 Linker Script editor          1.7.0.201602121829      fr.ac6.feature.mcu.ldscript.feature.group           Ac6
  OpenSTM32 Remote debugging support        1.10.0.201607251855    fr.ac6.feature.mcu.debug.feature.group Ac6
 
Best regards

Michael