adding product images gives 500 error after install 3.0.12

[pllera]

Working with vm 3.0.12 (joomla 3.4.5).

But when trying to add an image to a product or manufacturer I get a 500error. server log says the following.:

Notice: Undefined index: virtuemart_media_id in /home/matrixvi/public_html/tienda/administrator/components/com_virtuemart/models/media.php on line 320

Fatal error: Call to undefined function exif_imagetype() in /home/matrixvi/public_html/tienda/administrator/components/com_virtuemart/helpers/vmuploader.php on line 270

Any one any idea where this error comes from?

Thanks in advance for your help

[jenkinhill]

This forum has an excellent search facility. It is located top right of this page......

http://forum.virtuemart.net/index.php?topic=132092
http://forum.virtuemart.net/index.php?topic=131754