[Closed] SDK: Problem with ParamBlockDesc2 in 32-bit builds?

I have a plugin that’s working fine with all 64-bit versions of Max, and compiles for 32-bit, but then does not work properly in the 32-bit versions.

Initially I was getting the following dialog when I started 32-bit versions of Max:

ParamBlockDesc2 definition error
Error in ParamBlockDesc2 definition.
Bad option tag in block “my plugin parameters”, parameter “iterations”, option # 4

The pblock2 in question:

static ParamBlockDesc2 my_pblock (
  my_params,
  _T("my plugin parameters"),
  0,
  &myPluginDesc,

  P_AUTO_CONSTRUCT + P_AUTO_UI, 0,

  // rollout
  IDD_PANEL, IDS_PARAMETERS, 0, 0, NULL,

  // Parameter specifications
  my_val,
    _T("value"),
    TYPE_FLOAT,
    P_ANIMATABLE,
    IDS_VALUE,
    p_default,    0.5f,	             
    p_ms_default, 0.5f,              
    p_range,      0.0f, float(1.0f), 

    p_ui,
      TYPE_SPINNER, EDITTYPE_FLOAT,           
	  IDC_VAL, IDC_VALSPIN, SPIN_AUTOSCALE, 
	  p_accessor, &myPluginDesc,
	end,

  my_iter,
    _T("iterations"),
    TYPE_INT,
    P_ANIMATABLE,            
    IDS_ITERATIONS,
    p_default,    1,	       
    p_ms_default, 1,         
    p_range,      0, 100, //1.0E30, <-- I changed this value

    p_ui,
      TYPE_SPINNER, EDITTYPE_INT,           
	  IDC_ITER, IDC_ITERSPIN, SPIN_AUTOSCALE,
	  p_accessor, &myPluginDesc,
	end,

  end
);

I tried changing the maximum value of the parameter from 1.0E30 to 100 (as noted in the comment), and no longer receive an error message on starting Max. However, when I click on the modifier list in the modifier panel it is completely empty!

This occurs in both Max 2012 and 2013 32-bit versions (I’ve not tried compiling for earlier). As I said before, it seems to run without problems on all 64-bit versions.

Any idea what I’m doing wrong?