Description:
------------
I'm trying to automate MS ISA Server 2000 destination-set and filter-rule generation by using its COM Objects. The creation and modification processes perfectly works in VBS. When trying to implement those mechanisms with PHP the Script crashes whenever i try to modify newly created objects. The creation and modification is carried out and the rules are visible in ISA Managment afterwards, but the PHP Script does not cleanly exit. There are application errors (see below) logged in the system log when running from commandline and as apache module (apache crashes too).
If i do not try to modify any new objects the script terminates as expected.

I tried any available 5.x Version of PHP below php5.1-win32-200602101130.zip but no change in behavior.

Reproduce code:
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$FilterRuleName = "TestRule";

$objFPC = new COM("FPC.Root") or die("Unable to create FPC Objekt");
$MyFPCRuleSets = $objFPC->Arrays->GetContainingArray->ArrayPolicy->SiteAndContentRules;
$MyFPCRuleSets->Add($FilterRuleName);
$MyFPCRuleSets->Save();

unset($objFPC, $MyFPCRuleSets);
$objFPC = NULL;
$MyFPCRuleSets = NULL;

$objFPC = new COM("FPC.Root") or die("Unable to create FPC Objekt");
$MyFPCRule = $objFPC->Arrays->GetContainingArray->ArrayPolicy->SiteAndContentRules->Item($FilterRuleName);

echo $MyFPCRule->Name."\r\n";

$MyFPCRule->Description = "TestDesc"; <--- Crash on modification
$MyFPCRule->Save();

unset($objFPC, $MyFPCRule);
$objFPC = NULL;
$MyFPCRule = NULL;

Expected result:
----------------
Clean exit of Script

Actual result:
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PHP Crashes (commandline as well as Apache Module) and Logs 1 Event in the Applicationlog

Application Failure  php.exe 5.1.3.3 in php5ts.dll 5.1.3.3 at offset 00008fea

or

Application Failure  php.exe 5.1.3.3 in php5ts.dll 5.1.3.3 at offset 000093a9

or

Application Failure  php.exe 5.1.3.3 in php5ts.dll 5.1.3.3 at offset 00009b9aa