Script all of a sudden not working

Question

I've had success using a script to fill in empty cells in a talbe with a space and applying a paragraph and character style...until today. I haven't used it in a month or two so I was wondering if an update is causing it to not be "valid" anymore? Here's the script:
for (a=0; a<app.selection[0].parent.parent.cells.length; a++)
if (app.selection[0].parent.parent.cells[a].contents.length == 0)
  app.selection[0].parent.parent.cells[a].contents = " ";
  app.selection[0].parent.parent.cells[a].paragraphs[0].appliedParagraphStyle = app.activeDocument.paragraphStyles.item("Empty Cell");
app.selection[0].parent.parent.cells[a].paragraphs[0].appliedCharacterStyle = app.activeDocument.characterStyles.item("[None]");
And here's the error message I'm getting in CS4 while trying to use it:
Error String: Object does not support the property or method 'cells'
Line: 1
Source: for (a=0; a<app.selection[0].parent.parent.cells.length; a++)
Any help would be greatly appreciated!!!

Answer 1

Isn't that one of my masterpieces? I seem to recognize its (lack of) style ...
Jen, if the script does a little basic checking before running, you don't have to worry anymore where and how the cursor should be placed. This little change should do that:
pos = app.selection[0];
if (pos.hasOwnProperty("baseline"))
pos = pos.parent;
while (pos.constructor.name == "Cell")
pos = pos.parent;
if (pos.constructor.name == "Row")
pos = pos.parent;
if (pos.constructor.name != "Table")
alert ("Eh? Not in a table?");
exit(0);
for (allCells=0; allCells<pos.cells.length; allCells++)
if (pos.cells[allCells].contents.length == 0)
  pos.cells[allCells].contents = " ";
  pos.cells[allCells].paragraphs[0].appliedParagraphStyle = app.activeDocument.paragraphStyles.item("Empty Cell");
  pos.cells[allCells].paragraphs[0].appliedCharacterStyle = app.activeDocument.characterStyles[0];// .item("[None]");
I changed the 'characterStyle' line to use style #0 instead of the name "[None]", as it appears to disagree with my old CS. This script now ought to work on anything from CS to CS4.