Can you include the script so we can try to reproduce the problem? If you can't include the whole script just include the part where it hangs...

(+ changing summary/category).

Thank you for your report.

It's a simple Excel application.

Apache.exe - Application Error says, "The memory could not be 'written'."

<?
function do_Excel ($results, $UserDir)
{
	$excel = new COM("Excel.Application");
	$excel->sheetsinnewworkbook=1;
	$excel->Workbooks->Add();

	$book=$excel->Workbooks(1);
	$sheet=$book->Worksheets(1);

	$sheet->Name="Sheet1";
	$sheet->activate;
	$cell=$sheet->range("A2");
	$cell->activate;
	$cell->value="Generic";
//	putVariable($sheet, "B", "Dchains", 48);
	putVariable($sheet, "B", "Dchains", $results['partwidth']);
//	putVariable($sheet, "C", "HtSlats", 36);
	putVariable($sheet, "C", "HtSlats", $results['partheight']);
	putVariable($sheet, "D", "SlatThickness", 0.25);
	putVariable($sheet, "E", "HeadShaftCC5PD", 15.679);
	putVariable($sheet, "F", "HeadShaftDiameter", 1.9375);
	putVariable($sheet, "G", "HeadShaftLength", "DS1+DS2+Dchains+DS3+DS4+2");
	putVariable($sheet, "H", "DS1", 1.75);
	putVariable($sheet, "I", "DS2", 3.75);
	putVariable($sheet, "J", "DS3", 3.75);
	putVariable($sheet, "K", "DS4", 5.1875);
	putVariable($sheet, "L", "DS5", 3);
	putVariable($sheet, "M", "TS1", 1.75);
	putVariable($sheet, "N", "TS2", 3.75);
	putVariable($sheet, "O", "TS3", 3.75);
	putVariable($sheet, "P", "TS4", 1.75);
	putVariable($sheet, "Q", "SplitTailShaft", 0);
	putVariable($sheet, "R", "TailShaftCC5PD", 15.679);
//	putVariable($sheet, "S", "DLength", 216);
	putVariable($sheet, "S", "DLength", $results['partlength']);
	putVariable($sheet, "T", "TailShaftDiameter", 1.4375);
	putVariable($sheet, "U", "HeadShaftKey", 0.5);
	putVariable($sheet, "V", "TailShaftKey", 0.375);
	putVariable($sheet, "W", "TailShaftLength", "TS1+TS2+TS3+TS4+Dchains");
	
	$book->saveas($UserDir.'/GlobalVariables.xls');
	echo_gray ( '<br>Saved as '.$UserDir.'/GlobalVariables.xls');

	$book->Close(false);
	unset($sheet);
	unset($book);
	$excel->Workbooks->Close();
	$excel->Quit();
	unset($excel);
}
function putVariable ($sheet,$this_cell,$value,$value2)
{
	$cell=$sheet->range($this_cell.'1');
	$cell->activate;
	$cell->value=$value;
	$cell=$sheet->range($this_cell.'2');
	$cell->activate;
	$cell->value=$value2;
}
?>

Php 4.3.0 crashes also with COM.ADODB see bug #21517

This bug has been fixed in CVS.

In case this was a PHP problem, snapshots of the sources are packaged
every three hours; this change will be in the next snapshot. You can
grab the snapshot at http://snaps.php.net/.
 
In case this was a documentation problem, the fix will show up soon at
http://www.php.net/manual/.

In case this was a PHP.net website problem, the change will show
up on the PHP.net site and on the mirror sites in short time.
 
Thank you for the report, and for helping us make PHP better.

This is a Windows-specific bug that crashes Apache.

I politely suggest to please look into incorporating this fix into the Windows binary distribution in a sooner than later time frame.