_Mehrnaz Ayazi - Oct 2023_

_Note: if you open this file in a markdown preview env it's much easier to read_

search for the error you get you might find it here and how to resolve it:
Please add the errors you resolve to this file for other people's use.<br/>

1-  **ERROR: Public_Library/Tools/Symbolics/PROGRAM_COMPILER.cpp:Parse_Command:882: Parsing support disabled; compile with USE_LEX_YACC.**
   
 **_solution:_**
    change USE_LEX_YACC= in your Sconstruct.options file   to 1 
 
<span style="color:red">
 USE_LEX_YACC=0 
 </span>
<br />
<span style="color:green">
USE_LEX_YACC=1
</span>

2- Your viewer does not recompile or you get ```bash: /home/mhrnaz/PhysBAM/Projects/qt_viewer/qt_viewer: No such file or directory```

**_solution:_** follow the instructions in ```Projects/qt_viewer/README.md``` and recompile the viewer project