We see a blank page. It seems a PHP error occurs, check error log or open "System -> Global Configuration" page then open "Server" tab and temporary set "Error Reporting" parameter to "Development" value to show errors into a browser.

Regards,
ARI Soft

I've change the error logging setting.
this is the error that comes up:

Deprecated: iconv_set_encoding(): Use of iconv.internal_encoding is deprecated in D:\www\columbiaan.nl\www\CMS\libraries\joomla\string\string.php on line 27 Deprecated: iconv_set_encoding(): Use of iconv.input_encoding is deprecated in D:\www\columbiaan.nl\www\CMS\libraries\joomla\string\string.php on line 28 Deprecated: iconv_set_encoding(): Use of iconv.output_encoding is deprecated in D:\www\columbiaan.nl\www\CMS\libraries\joomla\string\string.php on line 29 Warning: imagecreatefromjpeg(): gd-jpeg: JPEG library reports unrecoverable error: in D:\www\columbiaan.nl\www\CMS\modules\mod_pl_contentslider\classes\images.php on line 109 Warning: imagecreatefromjpeg(): 'D:\www\columbiaan.nl\www\CMS/images/Columbiaan/nieuws2017/like.bmp' is not a valid JPEG file in D:\www\columbiaan.nl\www\CMS\modules\mod_pl_contentslider\classes\images.php on line 109 Warning: imagecopyresampled() expects parameter 2 to be resource, boolean given in D:\www\columbiaan.nl\www\CMS\modules\mod_pl_contentslider\classes\images.php on line 120 Fatal error: Call to undefined function imagebmp() in D:\www\columbiaan.nl\www\CMS\modules\mod_pl_contentslider\classes\images.php on line 129

This problem with "mod_pl_contentslider" module.

Regards,
ARI Soft

thanks!!!!!