Hi,
my problem was that I was able to upload my files,
but the files were saved with the wrong permissions by the webserver.
The files were online, but could not by displayed in the browser
because of too restricted permissions ("only owner").
I added in the file "tinybrowser.php" at line 93 after
"if(!$findnow || ($findnow && $exists !== false)) {"
the line
"chmod($tinybrowser['docroot'].$browsepath.$filename, 0755);"
So everytime I upload the files are saved with wrong permissions.
After I click the "browse"-Button permissions are changed to "read/
write public"
and I'm able to display the files on my website.
have fun
m