#22 Upload file - nothing happened

[LagunaWebDesign]

Hi,
PGRFileManager doesn't work on one server. I do not know what is wrong. I tested PGRFileManagager on many other servers and everything was ok.
Firstly, I couldn't see files icons (only titles), so I've changed cache folder chmod permission to 777, and I can see icons now, but I can't upload any files.
I see files, I can choose one and put in CKeditor textarea, but I can't upload.
I choose file to upload i click button to upload and nothing happen, no error message, nothing.

1. I tried htaccess file :
<IfModule mod_security.c>
SecFilterScanPOST Off
SecFilterEngine Off
</IfModule>

SetEnvIfNoCase Content-Type "^multipart/form-data;" "MODSEC_NOPOSTBUFFERING=Do not buffer file uploads"

2. I tried to change files like 'quick-upload-diff.txt'.

3. I tried change folder direction and folder permission.

Where goes tmp files PGRFileManager when upload? Maybe that would help me.

I upload files by my php scirpts and works on serwer, but what use PGRFileManager, that doesnt' work upload on that certain server?

Please help