An error message “registerset undefined” in the Frame /TASK < magic > window could be caused on Cortex-M by a duplicated “PendSV_Handler” symbol. Depending on the used TRACE32 version, a warning about the duplicated symbol is displayed. The solution is to delete the symbol not part of FreeRTOS using the sYmbol.Delete command.

Example:

sYmbol.Delete \\application\startup_stm32f407xx\PendSV_Handler