Discovery boards are missing
Hello Ahmed,
Definitively weird .
Any suspicious messages within eclipse .log (/.metadata/.log file ) ?
If not could you have a try either to install latest SystemWorkbench for STM32 all in one http://www.openstm32.org/Downloading+the+System+Workbench+for+STM32+installer or to launch a check for update within your current install ?
Br,
Cartu38