The plain text code may have been removed from the VCX. VFP will compile the code contained in the field 'methods' and store the compiled version in the field 'objcode'. These fields are in the class file .vcx (this can be opened like a table). If there is not any code in 'methods' but there is jibberish in 'objcode' then this has been done. You can recover this code using ReFox tool (Google for it -- it is not free).