Object module does not exist ? win7 ok, but win 2003 failed?

[joostshao]

vendor/ezyang/htmlpurifier/library/HTMLPurifier/HTMLModuleManager.php 163

            if (!$ok) {
                $module = $original_module;
                if (!class_exists($module)) {
                    trigger_error($original_module . ' module does not exist',
                        E_USER_ERROR);
                    return;
                }

i var_dump($module), then output
string(6) "Object", but in windows7 it is ok, windows 2003 failed,
php version == 5.3.27 ,no problem.
why ?
PHP extension ?

[ezyang]

I honestly have no idea why this might be happening, and w/o a Windows 2003 server handy, it will be hard to reproduce. Can you give more details about your system setup, in more detail; would it be possible for you to do more investigation?

[ezyang]

Closing this w/o further information.