Symptoms
Opening File Manager in CCP gives a blank page.
Opening the File Manager website in IIS on the host in question, the following message is shown:
Notice: Undefined index: SessionId in C:\Program Files (x86)\SWsoft\PEM\sysvhosts\elFinder\index.php on line 4
The following messages appear in C:\windows\temp\php-errors.log:
[21-May-2015 10:59:32 UTC] PHP Notice: Undefined index: culture in C:\Program Files (x86)\SWsoft\PEM\sysvhosts\elFinder\index.php on line 63
[21-May-2015 10:59:32 UTC] PHP Notice: Undefined offset: 0 in C:\Program Files (x86)\SWsoft\PEM\sysvhosts\elFinder\index.php on line 74
Cause
The global C:\PHP5\php.ini file contains the following directives:
display_errors on
error_reporting E_ALL
error_reporting may look differently, the important point is that it does not filter out E_NOTICE messages, i.e. there's no ~E_NOTICE pattern.
Under such conditions, OA CP cannot parse the response received from File Manager host. The behavior will be improved in scope of request POA-85645.
Resolution
Correct C:\PHP5\php.ini and apply either of the following, depending on the needs:
display_errors off
or
error_reporting E_ALL & ~E_NOTICE