This is the message I get.
Fatal error: Allowed memory size of 8388608 bytes exhausted (tried to allocate 4308 bytes) in /home/httpd/vhosts/miwian.nl/httpdocs/coppermine/include/picmgmt.inc.php on line 200
I tried to find php.ini but cannot find it to change the memory size. Maybe you can help me?
You probably don't have access to your php.ini file because you are webhosted. You'll have to ask your host to increase the memory size.
In the meantime, you can avoid that error message by not uploading large dimension images - resize them to more appropriate sizes before uploading.
You can also try switching to ImageMagick, if your host has installed it. You'll have to ask your host for the location.