externa media source integration

[brescianicri]

I try to access to drop box media source but doesn't work. You ca write e documentation ?
This is my snippest:

[[!FileDownload?
&getDir=`tests/`
&mediaSourceId=`6`
&tplFile=`jsDownload`
&tplWrapper=`jsDownloadwp`
&dateFormat=`d-m-Y`
&sortBy=`date`
&sortOrder=`DESC`
]]

But i recive this error:
"Principal 3 does not have permission to load object of class modContext with primary key: mgr"
and i don't see anything.
In my opinion this parameter "getDir" doesn't need, because in my dropbox app i select the directory.

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[brescianicri]

Maybe i found the problem:
in _fileInformation function this instruction:
$type = @filetype($fileRealPath); (row 1244)

doesn't work, and return false.
This do fail the order function and return nothig.

[brescianicri]

I add at line 1117 this if:

/*check that there is the file type or else I put in file*/
                        if ($fileInfo['type'] === false) {
                            $fileInfo['type'] = 'file';
                        }

and work, a see you script don't take, the correct date of file and 0 with file size.
I use this puglin:
http://modx.com/extras/package/dropbox

for create the media source.