[Lazarus] Changing a TLabel.Caption

[Timothy Groves]

I tried changing a TLabel.Caption property, and got a SIGSEGV.  Here's 
the offending code:

if (cmbProfileMeasures.Text = 'Inches') then
       begin
       labPDFWidth.Caption := 'in X';
       labPDFHeight.Caption := 'in';
     end
     else
       if (cmbProfileMeasures.Text = 'Points') then
       begin
           labPDFWidth.Caption := 'pt X';
           labPDFHeight.Caption := 'pt X';
       end
         else
         begin
           labPDFWidth.Caption := 'cm X';
           labPDFHeight.Caption := 'cm X';
       end;

I am using Lazarus 0.9.30-2build1 on LUbuntu 11.10.