Lots of warning messages and not watermarked

Hi,

I just downloaded and installed the plugin and decided to do a trial of uploading an image with the default watermark before attempting anything more adventurous.

I set the following settings:
Watermark type = image
Images sizes = all selected
Images types = all selected

The plugin diagnostics report:

[ Moderator note: Please wrap log data like that in backticks or use the code button. ]

Plugin Version: 2.3.7
Server OS: Linux (64 bit)
Required PHP Version: 5.0+
Current PHP Version: 5.3.6
GD Support Enabled!
FreeType Support Enabled!
PHP Safe Mode: is disabled!
PHP allow_url_fopen: is enabled!
Memory Use: 36.5 / 256M
Peak Memory Use: 36.6 / 256M
Server Load Average: 2.94, 3.23, 3.26

I then tried uploading an image (using the drag and drop option) and get the following errors (the image was uploaded but not watermarked):

Warning: imagecreatefrompng() [function.imagecreatefrompng]: Filename cannot be empty in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 169

Warning: imagesx() expects parameter 1 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 170

Warning: imagesy() expects parameter 1 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 171

Warning: Division by zero in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 176

Warning: imagecopyresized() expects parameter 2 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 185

Warning: imagecreatefrompng() [function.imagecreatefrompng]: Filename cannot be empty in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 169

Warning: imagesx() expects parameter 1 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 170

Warning: imagesy() expects parameter 1 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 171

Warning: Division by zero in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 176

Warning: imagecopyresized() expects parameter 2 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 185

Warning: imagecreatefrompng() [function.imagecreatefrompng]: Filename cannot be empty in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 169

Warning: imagesx() expects parameter 1 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 170

Warning: imagesy() expects parameter 1 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 171

Warning: Division by zero in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 176

Warning: imagecopyresized() expects parameter 2 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 185

Warning: imagecreatefrompng() [function.imagecreatefrompng]: Filename cannot be empty in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 169

Warning: imagesx() expects parameter 1 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 170

Warning: imagesy() expects parameter 1 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 171

Warning: Division by zero in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 176

Warning: imagecopyresized() expects parameter 2 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 185

Warning: imagecreatefrompng() [function.imagecreatefrompng]: Filename cannot be empty in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 169

Warning: imagesx() expects parameter 1 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 170

Warning: imagesy() expects parameter 1 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 171

Warning: Division by zero in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 176

Warning: imagecopyresized() expects parameter 2 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 185

Warning: imagecreatefrompng() [function.imagecreatefrompng]: Filename cannot be empty in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 169

Warning: imagesx() expects parameter 1 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 170

Warning: imagesy() expects parameter 1 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 171

Warning: Division by zero in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 176

Warning: imagecopyresized() expects parameter 2 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 185

Warning: imagecreatefrompng() [function.imagecreatefrompng]: Filename cannot be empty in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 169

Warning: imagesx() expects parameter 1 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 170

Warning: imagesy() expects parameter 1 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 171

Warning: Division by zero in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 176

Warning: imagecopyresized() expects parameter 2 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 185

Warning: imagecreatefrompng() [function.imagecreatefrompng]: Filename cannot be empty in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 169

Warning: imagesx() expects parameter 1 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 170

Warning: imagesy() expects parameter 1 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 171

Warning: Division by zero in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 176

Warning: imagecopyresized() expects parameter 2 to be resource, boolean given in /home/sitename/public_html/foldername/wp-content/plugins/transparent-image-watermark-plugin/transparent-watermark-tools.php on line 185
521

I also tried using the “select files” button to upload the image with the same result.

Any idea what I might be doing wrong?

Many thanks!

http://wordpress.org/extend/plugins/transparent-image-watermark-plugin/