Error loading .stl file to POFACETS 4.1

I am currently using POFACETS 4.1 to model an bistatic RCS for an Rectangular slab, which was exported from blender in .stl format. while I upload file to MATLAB POFACETS 4.1, It shows below error.

Rendering drawing...

Unrecognized function or variable 'v'.

Error in utilities>rndread (line 332)

vout = v'; % "

Error in utilities>ImportSTL_Callback (line 253)

[F, V, C] = rndread(fileloc);

Error in gui_mainfcn (line 95)

feval(varargin{:});

Error in utilities (line 59)

gui_mainfcn(gui_State, varargin{:});

Error while evaluating UIControl Callback.

Did anyone face this issue and can someone help me solve this issue?

Thanks

[Tenzing Thiley]

.stl should be in ASCII not in binary. You can use any conversion software such as 3ds max and set as ASCII. It will work