Problem downloading files TinyFileManager

[FelipeAnder]

There's a problem with uploading files. When I upload a file (by drag and drop or by the dialogue box), the procedure seems working and a thumbnail of the file (for example a .PNG file) is loaded into the deskzone, but at the end a cross is written over it and an error message ('not found') is quickly displayed too. And the file is not uploaded to the folder. What parameter should I change in the program variables or what lines of code should I add? Thanks for your help.