Unable to access main during debug mode on uvision / no problem with mcuxpresso

Question

This might be a newbie question, but I am going crazy already haha.

1. symptom
   I am having an issue with the lpcxpresso54102 Dev Board, where I am not able to access main.c during debug session, but if I check on the disassembly window I can see the main file, instruction set and actually the project works and I am able to set breakpoints through disassembly. disassembly_data

2. symptom
   If I place a break point on main.c, when I start the debug session, my breakpoint is replaced by a circle with a exclamation point inside the circle. Browsing through ARM dev QA site, I was able to find that this issue is related to

   NO CODE AT BREAKPOINT: A breakpoint could not be set because there is no code generated for this source code line. Compiler or linker optimization can remove unnecessary source code.

   ARM_DEV_QA
   NOTE: optimization config. was modified from original project to 0 optimization level.

3. symptom
   Once I enabled the option for debug information on the target configuration, the file "startup_LPC54102_cm4.s", the cursor was actually going trough the file and eventually reaching the infinite loop used to toggle the led on the board.

   NOTE: This file is the example code from the SDK example lib from NXP (blinky), but all the other examples behave the same in UVision, but if I tried on MCUXpresso IDE the debug session works just fine.

   Also I checked the linker files and they seem to be ok.

I changed the configuration on the target of Uvision enabling the output info and also changing the optimization to level 0, checked the compiler control string on C/C++ tab and it seems that all the files path and controls are there (no completely sure though). I tried with external and internal debug HW, same behavior.