Can you say what the errors are - if we see the problem we may be able to suggest a solution.
My normal process is to use the tool to generate a non-FreeRTOS project, make sure that is working, then add in the required FreeRTOS source files. It isn’t necessary to alter the linker script (in the PIC24 case).
Once the files are building you can copy the main() of any of the demos in the main FreeRTOS download to create tasks and start the scheduler.
Let us know how far you get, and what the issue is next time you a blocked.