Hi Erik,
Have now a zone with two banners one remnant one standard, For testing I put the four types of invocation code in a HTML-page on the server where Revive is installed. Even in the /www-directory of the Revive installation. Waited 20 minutes because of the cache. Do not get the desired result. The Local Mod Tag is printed as plain text. There are no issues on the server. No timing out, no slowness, no 500 error.
Example scripts I get from the internet work fine just by copy/pasting them in to the HTML-page.