I'm trying to read from a file and populate a stringgrid, and keep getting 'Project spares.exe raised an exception class 'External error: SIGSEGV' when trying to convert an integer to string. Running the application gets the dialog: Access Violation Press OK to ignore and risk data corruption or cancel to kill the program. Clicking OK brings the grid up with the header row populated, and the first field in the first non-fixed row (Cells[0,1]) with the proper value, but the rest of the table is blank. I put a try...finally block in and now the IDE breaks at the read statement. Any suggestions? The code snippet follows.

procedure TfrmDashBoard.GetInvExecute(Sender: TObject;
                                        DB : string);
var
   {stockItem type is a record with the following structure:
     recordID    : longint;
     ClassNumber : integer;
     PartNumber  : string;
     Make        : String;
     TypeofEqip  : string;
     Model       : string;
     Description : string;
     quantity    : integer;
     location    : string;
     price       : real;    }
    workspace : Stockitem;
    row       : longint;
begin
      assignfile(inventory,db);
      try
      reset(inventory);
      row := 0;
      while not eof(inventory) do
            begin
                read(inventory,workspace);
                inc(row);
                if db = 'Ops' then
                  with stgInvOps do
                       begin
                            Cells[0,row] :=
inttostr(workspace.ClassNumber);
                            Cells[1,row] := workspace.PartNumber;
                            Cells[2,row] := workspace.Make;
                            Cells[3,row] := workspace.TypeofEqip;
                            Cells[4,row] := workspace.Model;
                            Cells[5,row] := workspace.Description;
                            Cells[6,row] :=
inttostr(workspace.quantity);
                            Cells[7,row] := workspace.location;
                            Cells[8,row] := floattostr(workspace.price);
                       end
                else

thanks.
windows7 32bit, SP1
Lazarus 0.90.30
FPC: 2.4.2
-Chris

First guess:
You need to set the number of rows and columns in the grid. It does not auto expand.

Regards,
Sven

Depending on the current compiler directive {$H+} (default for any lazarus program) type string will be ansistring.
If you write a record with a variable of type ansistring to file, it will write the pointer to that string.
If you read that file, this poiter probably will point to something you have no access to --> SIGSEV

Change all string explictely to ShortString in the definition of your record.

Bart