I'm using DTRegister v 2.5.9 and DTRegister EventLink v 2.2. Since upgrading, I have lost access to the images for "Register Now" and "View Events" which are now all located in the various /images/{color] files. The link created by the {dtregister}
You should have upgraded the plugin as well... as the link structure in the component was modified since the version you previously had... the plugin has to follow suite. Upgrade the plugin to version 2.3.4, which is what would be included in the 2.5.9 package that you have. You likely also need to upgrade the Upcoming events module... if you use it. Thanks.