ImgSizer Plugin - what i would like to try with random images

I have an index page that I’d like to load with random photos from my a custom field in my weblog.

The URL to the photo I would like to load is being called by a custom field, “full” and would link from the main page, where the image would be sized to 290 x 274 and then would link out to the full version.

{exp:weblog:entries weblog="galleries" orderby="random" sort="desc" limit="6"}
<a href="http://{title_permalink=">{exp:imgsizer:size src="{large}" width="290" height="274" alt="Gino Guarnere Sporting Event Photography" class="entry_img"}</a>
{/exp:weblog:entries}

When I use the code above, I get a blank page.

Does the syntax above work in any way? I saw some other threads on this but couldn’t find a resolution, per se. Thank you!

The way I would LIKE the page to look (right now hard coded images) can be seen here.

One of the things I realize is that the photos being called doesn’t necessarily have a Cache folder to write to…would that solve the issue?

Thank you!

GG